Watching Wildlife – How to choose the right Trail Camera

This is part one of a two-part series that will look into different ways of filming wildlife in your back garden. In this part, we will take a look at trail cameras and what to look out for when buying one. 


The variety of trail cameras on offer can be overwhelming, here are a few key things to look out for:

Type of LEDs

In order to capture videos or images in the dark, camera traps use infrared LEDs to illuminate the subject with little to no visible light used. There are two main types of LED flash systems that trail cameras use. These are No Glow and Low Glow. No Glow LEDs produce very little visible light and so are almost completely undetectable by the subject. Low Glow LEDs produce a faint red glow and so are not completely invisible, which can sometimes alert animals such as deer and foxes. However, they do have the benefit of being able to illuminate better over a longer distance.

Red Fox Bushnell Trail Camera
Red Fox captured on Bushnell Trail Camera
Trigger Speed

Trigger speed is the time taken for the camera to take a photo once it has detected movement. If you are aiming to capture a fast-moving subject, then a quicker trigger speed (below 0.3 seconds) will enable you to achieve these photos before your subject has moved out of frame. 

Recovery Time

Recovery time is the time taken for the camera to process an image and become ready to take a second photo. If you want to capture multiple images of a subject as it comes into view of your camera, then a shorter recovery time will allow for this.

Badger photo Ltl Acorn Trail Camera
Badger photo captured on Ltl Acorn Trail Camera  ©Bryony James
Hybrid Mode

Hybrid mode allows the camera to take videos and photos simultaneously. A camera with this capability may be useful if you want to get as much footage as possible of anything that falls into frame of the camera. If you are more interested in capturing only photographs or only videos, this mode may not be an important feature.

Resolution and Interpolation

The quality of the images and videos that your trail camera can take will depend on its resolution. Most cameras have settings that can alter the resolution either, decreasing it through compression, or increasing it through interpolation. Compression is useful if you want to deploy your camera for a long time and memory card capacity may become an issue, whereas interpolation can produce a larger image by adding pixels. The best way to compare the quality of images between cameras is to look at sample photos and videos. The displayed megapixel value is often resolution as a result of interpolation. The true resolution of the image sensor can usually be found in the specifications as the true sensor resolution.

Screen

Many trail cameras come with built-in viewing screens allowing you to view your photos and videos in the field. This is particularly useful if you want to take a few test shots to check the positioning of the camera.

Our Suggestions

Browning Strike Force Full HD

If you’re looking for a good entry-level camera, then take a look at the Browning Strike Force Full HD. It takes high quality images and videos for a very affordable price.
LED type: Low Glow
Trigger speed: 0.135-0.7s
Recovery time:  0.5s
Hybrid: No
Resolution: 22MP
Viewing Screen: Small screen showing text only

 

Browning Dark Ops HD Pro X

For the next step up, the mid-range  Browning Dark Ops HD Pro X is one of our most popular trail cameras. With No Glow LEDs and a impressively quick trigger speed, this is a great all-round option.
LED type: No Glow
Trigger speed: 0.22s
Recovery time: 0.6s
Hybrid: No
Resolution: 20MP
Viewing Screen: 3.8cm colour screen

 

Bushnell Core DS No Glow

If the hybrid mode is an important feature for your work, a Bushnell Core DS No Glow may be the one for you. Dual sensors target day and night in order to provide the best quality images, no matter the light conditions.
LED type: No Glow
Trigger speed: 0.2s
Recovery time: 0.7s
Hybrid: Yes
Resolution: 30MP
Viewing Screen: 5.08cm colour screen

 

Browning Spec Ops Elite HP5

If the subject of your trail camera photos or videos is particularly fast, it may be worth taking a look at the Browning Spec Ops Elite HP5 whose adjustable trigger speed starts from 0.1 seconds is one of the fastest on the market.
LED type: No Glow
Trigger speed: 0.1-0.7s
Recovery time: 0.5s
Hybrid: No
Resolution: 24MP
Viewing Screen: 5cm colour screen

Accessories

There are a selection of accessories that you may want pair with your camera to get the best out of your camera-trapping experience.
If you are worried about leaving an expensive piece of kit outside and unattended, then you may want to invest in a Python Lock. This cable lock will fit most trail cameras and and will give you piece of mind that your camera is secured in place. Here you can watch how to set up this lock with your own trail camera. You also may be interested in a security case that is compatible with your trail camera. These cases house your camera and secure with a padlock, which helps prevent vandalism and theft.

SD Cards

All cameras need a memory card to store your photos and videos on. Make sure to check what SD card capacity your camera needs, this is usually found in the specifications section. Browse our selection of SD cards to order alongside your camera so that you can get snapping as soon as possible.

Power Options

Most cameras are powered by batteries. We recommend you use Lithium Ion batteries with your trail camera to ensure maximum trigger speeds and longer battery life. Make sure to check how many batteries your camera needs. Some trail cameras are also compatible with solar panels which will allow you to extend the battery life of your camera. This is especially useful if you want to leave your camera outside for extended periods of time.

Starter Bundles
Browning Strike Force Starter Bundle

If you are looking to buy a trail camera and want to make sure you will be able to get out and start capturing as soon as it arrives, then you may want to take a look at our starter bundle options. These bundles come with a memory card and batteries that are right for your camera to ensure you have everything you need to get started.

To see more trail cameras available, take a look at our range here

Would you like some more advice on which trail camera or nest box camera is most suitable for you? Contact us on +44 (0)1803 865913 or email customer.services@nhbs.com . 

The NHBS Guide to UK Dragonfly Identification

The season is finally upon us when sun-loving dragonflies are emerging from their aquatic homes. The cold beginning to the year has certainly delayed their appearance, but flashes of blue and green are now being seen above our local ponds and streams.

The name dragonfly is often used to refer to insects of the order Odonata, that includes both the actual dragonflies and their close relatives, the damselflies. In this blog we will use the word dragonfly to describe only the genuine dragonflies from the sub-group Anisoptera.

Although initially very similar in appearance, dragonflies and damselflies can be easily told apart by a few identifying features. Dragonflies tend to be larger and bulkier insects overall with significantly larger eyes when compared to the slim built and rather delicate damsels. When at rest dragonflies hold their wings open whereas damsels remain closed.

Emperor Dragonfly by Ferran Pestaña via Flickr (L) and Common Blue Damselfly by Charlie Jackson via Flickr (R)

These insects are not only beautiful but are also very important members of freshwater ecosystems. They manage populations of smaller prey species such as mosquitos and provide a source of food for many birds including wagtails, kingfishers and hobbies. They are a reliable indicator of good quality freshwater.

There are just under 30 species of dragonfly living in the UK. Identification of these is primarily performed using the patterns and colouration of the thorax and abdomen, although some particularly similar species need the finer details, such as leg colour, to be examined.

Below are ten of the most common and widespread species you are likely to spot, split by taxonomic family.

Hawkers (Aeshnidae)

Hawkers (also known as Darners) are a family of large rather ‘traditional- looking’ dragonflies. They are very strong fliers, often seen flying forwards and backwards and hovering in mid-air. The name hawker, meaning to hunt on the wing, references their ability to catch prey in flight using their feet or mouthparts. Hawkers rarely come to rest, making identification more challenging than other groups.

Common Hawker – Aeshna juncea

Appearance: A large black or brown dragonfly with blue spots along the body.
Look out for: Two extended yellow lines on the thorax (highlighted in the image) make it possible to separate the male of this species from its counterpart, the migrant hawker. The patterns on the abdomen that are also highlighted below also differ and will be explained further below.
Months active: June – October
Size: 7.4cm

Common Hawker by Jorg Hempel (L) via Flickr and Oddwellies (R) via Flickr. The red boxes highlight two important markings for separating this species from the migrant hawker below.

Migrant Hawker – Aeshna mixta

Appearance: Overall, very similar in appearance to the common hawker although very slightly smaller.
Identification: This species has truncated, or non-existent stripes on the thorax, separating it from the common hawker. However the most important feature, present in both males and females, is the noticeable widening of the abdominal line at the top, forming a T shape that is not present on the common hawker.
Months active: July – November
Size: 6.3cm

Migrant Hawker by Tony Hisgett (L) via Flickr and Charlie Jackson (R) via Flickr. Note the short stripes and ‘t-shaped’ mark on upper abdomen

Southern Hawker – Aeshna cyanea

Identification: A bright and colourful dragonfly with alternating lime green and blue markings.The females of this species lack the blue and so appear more modestly coloured.
Months active: June – October
Size: 7cm

Southern Hawker by Airwolfhound (L) via Flickr and Ian Preston (R) via Flickr

Brown Hawker – Aeshna grandis

Appearance: Brown-bodied dragonfly with uniform small blue markings along the side of the abdomen.
Identification: The brown, slightly translucent wings on this species are unique in UK dragonflies, making it easy to identify.
Months active: June – September
Size: 7.3cm

Brown Hawker by It’s No Game (L) via Flickr and Pavel Kirillov (R) via Flickr

Emperor Dragonfly – Anax imperator

Despite the lack of ‘hawker’ in this dragonfly’s name, it is still found in the same family as the previous species and so is regarded as a hawker-type.

Appearance: An eye-catching brightly coloured species. The UK’s overall bulkiest, largest dragonfly (although not technically the longest – see the golden-ringed).
Identification: Bright green thorax, with blue ‘tail’
Months active: June to August
Size: 7.8cm

Emperor Dragonfly by Tristram Brelstaff (L) via Flickr and Charlie Jackson (R) via Flickr

Goldenrings (Cordulegastridae)

Another family of large dragonflies, the Goldenrings are also known as ‘Spiketails’ due to the females prominent, long ovipositors at the end of their bodies. Only one member of this family is currently found in the UK, making identification simple.

Golden-ringed Dragonfly – Cordulegaster boltonii

Identification: An appropriately named dragonfly with prominent colouration – bright yellow and black stripes down the body are found on both the males and females of the species.
Months active: May- September
Size: 7.4cm, although females can be up to 8.4cm when including their long ovipositor, making them technically the longest species found in the UK.

Golden-ringed Dragonfly images by Gail Hampshire via Flickr – Left image and right image

Chasers and Darters (Libellulidae)

Chasers and darters are significantly smaller dragonflies than the hawkers and goldenrings, including our smallest species. Appropriately named, these dragonflies tend to perch and then suddenly chase/dart after their prey. Their movement can appear less smooth and instead more erratic than the larger hawkers.

Chasers have rather wide/broad and flattened bodies when compared to the familiar image of a slender bodied dragonfly.

Four-spotted Chaser – Libellula quadrimaculata

Appearance: A ‘stout’ brown dragonfly with a darker tip to the base of the abdomen.
Identification: As the name suggests, four characteristic spots are present on the midpoints of the wings.
Months active: May – September
Size: 3.9- 4.8 cm

Four-spotted Chaser by gailhampshire (L) via Flickr and ianpreston (R) via Flickr

Broad-bodied chaser – Libellula depressa

Appearance: Wide-bodied with a striking and beautiful ‘icy’ blue body on male. Females look similar but with a yellowy-golden body.
Identification: A number of other chaser species share the blue colouration, but the broad-bodied is easily the most commonly seen. The dark bases to all four wings is an additional identifying feature.
Months active: May – August
Size: 3.9 – 4.8 cm

Broad-bodied Chaser male (L) by Ian Preston via Flickr and female (R) by Jans Canon via Flickr

Darters are also shorter than the hawker dragonflies but have more slender bodies than the chasers with a ‘cigar-like’ shape.

Common darter – Sympetrum striolatum

Appearance: A brightly coloured, red dragonfly with yellow side stripes on the thorax. Females of the species are instead rather uniformly yellow.
Identification: Despite the coloration, this dragonfly looks very similar to many other darter species, in particular the rarer Ruddy darter. These two can be distinguished by the presence of yellow leg stripes, whereas the Ruddy’s legs are purely black.
Months active: July – October
Size: 3.8 – 4.3cm

Common Darter female (L) by Nikk via Flickr and male (R) by Gail Hampshire via Flickr

Black Darter – Sympetrum danae

Appearance: Smallest resident dragonfly. The males are entirely black whereas females are a bright yellow, appearing similar to the females of the common darter.
Identification: The mature male of this species is the only black dragonfly in the UK.
Months active: June – October
Size: 2.9 – 3.4 cm

Black Darter male (L) by Alastair Rae via Flickr and female (R) by Gail Hampshire via Flickr

 


Recommended reading:

Field Guide to the Dragonflies of Britain and Europe
By: Klaas-Douwe B Dijkstra, Asmus Schröter and Richard Lewington
Paperback | Oct 2020
Hardback | Oct 2020

Fully revised, the second edition of this guide features updated taxonomic and distribution information, as well as five new species discovered since the first edition in 2006.

 

Britain’s Dragonflies
By: Dave Smallshire, Andy Swash
Flexibound | Aug 2018
This updated fourth edition features hundreds of stunning images and identification charts covering all 57 resident, migrant and former breeding species, and six potential vagrants.

 

 

All prices correct at the time of this article’s publication.

The NHBS Guide to Common UK Moth Identification

Moths are a fascinating and beautiful part of the natural landscape in the UK. However due in part to their elusive nature, often plain colouration and the unfavourable habits of a few cloth eating species, they very rarely receive the same recognition as their more illustrious butterfly cousins.

However, understanding and protecting our moths is more important now than ever. Recent studies in the UK have highlighted that many common and specialist moth species are continuing along a worrying trend of decline as they are subject to increasing pressures from urbanisation, pollution, agricultural intensification and climate change. The latest State of Moths Report estimated declines in moth abundance of around 33% between 1968 and 2021, while the latest State of Nature report estimates declines for many common moths of around 25% between 1978 and 2018. While the estimated rate of decline does vary between studies, being influenced by the timescale over which data was collected and the geographic location data was collected from (northern counties appear to undergo slower declines in moth abundance than southern counties), they come to the same conclusion that many of the UK’s moths are declining at significant rates.

These reports would not be possible without the extensive records provided by professional entomologists and amateur moth enthusiasts around the country.  You can help conserve this key group by submitting your own records to either a local record centre or to a national recording scheme, such as the National Moth Recording Scheme (NMRS).


 Identifying Moths

Getting started with identifying moths can appear a rather daunting task. This concern is understandable as a quick skim through any field guide will quickly show the near identical appearances of some species and the extreme variation present in others. However there are a number of moth species that are quite distinct and offer an excellent introduction to the world of moths.

In this article we have compiled a list of those species which can be encountered throughout most of the UK. Some species are more restricted than others and some are only typically encountered when using a light trap, however they are all fantastic species to become familiar with.

Silver-Y

Latin name: Autographa gamma
Distribution: Throughout UK
Size: Medium
Look out for: Unbroken silver “y” on the upper forewing.
Did you know?: The Silver-Y undertake intergenerational migrations. Immigrant moths in spring will breed and over successive generations swell their population size by around four times, until the Autumn when they emigrate back across the channel and south through Europe.

A small brown Silver-Y moth on a leaf
Silver-Y Moth (Autographa gamma) by xulescu_g via Flickr

Large Yellow Underwing

Latin name: Noctua pronuba
Distribution: Throughout UK
Size: Medium/Large
Identification: Yellow hindwings with black borders are the best indicator, however it often rests with wings closed and has a highly variable appearance.
Did you know?: Considered by some to be one of our most common medium-large moths, especially when populations are bolstered by occasional large immigrations in the south of the UK.

A Large Yellow Underwing Moth sits on a blade of grass. It is orange-brown in colour with little patterns except for a pair of grey-brown circles on the wings and black wing tips
Large Yellow Underwing Moth (Noctua pronuba) by Martin Cooper via Flickr

Red Underwing

Latin name: Catocala nupta
Distribution: Throughout UK, most common in south-central England
Size: Large
Identification: Red hindwing is very distinctive. Similar looking species have a darker crimson red and are much scarcer.
Did you know?: The Red Underwing is gradually increasing its range northwards and becoming more common in previously low-density colder regions.

A small moth with brown mottled upper wings. The under wings are a striking dark orange striped with dark brown.
Red Underwing Moth (Catocala nupta) by Alastair Rae via Flickr

Angle Shades

Latin name: Phlogophora meticulosa
Distribution: Throughout UK
Size: Medium
Identification: Unique folded wings give the impression of a fallen autumn leaf
Did you know?: Adult moths are often encountered in the day resting in the open.

A small, cream to light brown coloured moth. The edges of the wings are scalloped and the wings have a darker, ringed triangle section on the outside wing edge.
Angle Shades Moth (Phlogophora meticulosa) by Donald Hobern via Flickr

Peppered Moth

Latin name: Biston betularia
Distribution: Throughout UK
Size: Large
Identification: Rests with wings spread open. White form is peppered with black spots. Black form has mostly uniform colour and is generally only found in urban areas.
Did you know?: The abundance of white and black variants of the Peppered Moth has been extensively studied and is often used as an example of evolution by natural selection.

A small, white moth speckled with black rests on a mossy wood piece.
Peppered Moth (Biston betularia) by gailhampshire via Flickr

White Ermine

Latin name: Spilosoma lubricipeda
Distribution: Throughout UK
Size: Medium
Identification: Strong white coloured forewings, peppered with black spots, and a yellow-coloured upper abdomen. Wing colour and spotting is variable within and between populations.
Did you know?: Its common name is derived from its resemblance to an Ermine coat.

A small, white moth is perched on a leaf. It has creamy white long hair on its legs, abdomen and head. Its wings are also white with some scattered dark brown/black spots.
White Ermine Moth (Spilosoma lubricipeda) by Patrick Clement via Flickr

Muslin Moth

Latin name: Diaphora mendica
Distribution: Throughout UK
Size: Medium
Identification: They have large stocky wings. Males typically have grey-brown coloured wings, whereas Females have a similar colouration to White Ermine moths, though their wings are opaque
Did you know?: Male Muslin Moths in Ireland have a creamy white colouration to their wings. Similarly coloured males can also be found in some locations on the Cornish/Devon border.

A small grey-brown moth is perched on a lichen covered tree. It has long fluffy hair on its head and abdomen and grey-brown wings with a few symmetrical spots.
Muslin Moth (Diaphora mendica) by Patrick Clement via Flickr

Swallow-tailed Moth

Latin name: Ourapteryx sambucaria
Distribution: Throughout UK, though scarcer in Northern Scotland
Size: Large
Identification: Broad wings with a pale uniform yellow colour, intersected by diagonal dark lines. Hindwings have short tails.
Did you know?: The species is hard to encounter without a light trap. The adults have a short flight period and are strictly nocturnal, while the caterpillars have a cryptic colouration which gives them the appearance of a twig.

A white-lemon yellow moth is sat on a rock next to some grass. It has two symmetrical dark yellow stripes on its upper wing, one stripe on the lower wings. The lower wings have pointed tips and its body is covered in lemon yellow fluffy fur.
Swallow-tailed Moth (Ourapteryx sambucaria) by Ben Sale via Flickr

Feathered Thorn

Latin name: Colotois pennaria
Distribution: Throughout UK
Size: Medium
Identification: Rests with wings flat apart. Wings are a reddish brown with a pink hue and have a slightly hooked tip on the forewing. They fly very late in the year which can help with distinguishing from similar species.
Did you know?: Their common name is derived from the large feathered antenna present on males of the species.

A small orange-yellow moth with a fluffy head and abdomen. The wings have a set of symmetrical brown dots and two horizontal dark stripes.
Feathered Thorn Moth (Colotois pennaria) by Ben Sale via Flickr

Hebrew Character

Latin name: Orthosia gothica
Distribution: Throughout UK
Size: Medium
Identification: Have distinctive and unique black markings on the forewing.
Did you know?: Their common name is derived from the markings on the forewing which resemble the Hebrew letter Nun.

A chocolate brown moth with short hair on its head and abdomen. The wings have areas of darker brown 'C' shaped patterning
Hebrew Character Moth (Orthosia gothica) by Ben Sale via Flickr

Common Quaker

Latin name: Orthosia cerasi
Distribution: Throughout UK, though scarcer in Northern Scotland
Size: Medium
Identification: Has a highly variable markings and colouration, however the strong outline of the “oval” and “kidney” markings on the forewings is a helpful identifier.
Did you know?: The four quaker species in the UK are believed to have received their common name back in the 1700s. Lepidopterists took inspiration from the Quakers at the time, who apparently wore clothing of similar hues.

A small brown moth with a fluffy head and abdomen. The wing tips have vertical bars and the wings have distinctive symmetrical sphere and kidney-shaped markings.
Common Quaker Moth (Orthosia cerasi) by Ben Sale via Flickr

Elephant Hawk-Moth

Latin name: Deilephila elpenor
Distribution: Throughout UK, though scarce in Scotland
Size: Large
Identification: Has striking and well defined pink colouration across the whole body.
Did you know?: The name of the Elephant Hawk Moth is derived from its resemblance to an Elephant’s trunk when in its larval form.

A striking pink and yellow-brown moth. The body is elongated with a pink vertical stripe through the middle and pink-coloured edges. The wings are outwardly pointed and have 3 vertical pink stripes on each side.
Elephant Hawk-Moth (Deilephila elpenor) by Alastair Rae via Flickr

Poplar Hawk-moth

Latin name: Laothoe populi
Distribution: Throughout UK
Size: Large
Identification: Unique wing shape where hindwings extend beyond forewings and gives it a resemblance to a dead leaf. Its abdomen is curved upwards at the tip.
Did you know?: This is believed to be our most common Hawk-Moth species and it can be found by light trapping in summer throughout the UK.

A uniquely shaped light-grey moth, with a thick curved body. The wings are outwardly pointed and have bars of mottled brown on the centre of the wing and at the wing tip.
Poplar Hawk-moth (Laothoe populi) by Ben Grantham via Flickr

Jersey Tiger Moth

Latin name: Euplagia quadripunctaria
Distribution: Mostly found it the South-west of the UK, though it is spreading North
Size: Medium-Large
Identification: Wings bear a unique diagonal zebra stripe pattern which can be used to tell it apart from other Tiger Moth species.
Did you know?: Until recently this moth was considered scarce in the UK and could only be commonly encountered on Jersey and some parts of the South Devon coastline.

A striking moth with dark brown, creamy white and yellow colouration. The wings are symmetrical with creamy white stripes on a dark brown wing, and the tips of the wings are coloured yellow with four dark brown spots.
Jersey Tiger Moth (Euplagia quadripunctaria) by Paul via Flickr

Garden Tiger Moth

Latin name: Arctia caja
Distribution: Throughout UK
Size: Medium-Large
Identification: Bright orange hindwings have bold blue-black spots which can help tell this species apart from other Tiger Moths
Did you know?: The Garden Tiger has defensive glands behind its head which it uses to secrete a toxic fluid when attacked.

This moth has a chocolate brown fluffy head, with vibrant orange hair on its abdomen and three black strikes near the bottom. The upper wings are creamy white with dark brown patterning. The hind wings are a vibrant orange with black-blue spots.
Garden Tiger Moth (Arctia caja) by Alastair Rae via Flickr

Scarlet Tiger Moth

Latin name: Callimorpha dominula
Distribution: Mostly found it the South-West of the UK and Wales
Size: Medium
Identification: The forewings have a distinct metallic green-black colour patterned with white/cream coloured spots. Hindwings are a striking red colour in most individuals.
Did you know?: Rarely aberrant forms of Scarlet Tiger Moth occur with yellow underwings.

A vibrant moth with a red underwing. The upper wings are black with symmetrical white spots. The underwing is a striking red with symmetrical black colouration. The thorax is black and the abdomen is red with a black stripe through the middle.
Scarlet Tiger Moth (Callimorpha dominula) by Patrick Clement via Flickr

Six-spot Burnet

Latin name: Zygaena filipendulae
Distribution: Throughout UK
Size: Medium
Identification: Has metallic coloured forewings patterned with three pairs of vibrant red spots
Did you know?: The six-spot Burnet is the commonest burnet moth in the UK and can be found across most of the country, including the outer hebrides.

The Six-spot Burnet Moth has long, dark blue antennae and a grey-blue wing with symmetrical red spots. The thorax has black short hair.
Six-spot Burnet Moth (Zygaena filipendulae) by Tom Lee via Flickr

Cinnabar Moth

Latin name: Tyria jacobaeae
Distribution: Throughout UK
Size: Medium
Identification: Forewings are dark black with a long streak of vibrant red on the outer edge. Antennae are thin and lack the bulbous tip of similar looking Burnet moths.
Did you know?: The caterpillars are gregarious feeders of ragwort, and have been intentionally introduced into the United States, Australia and New Zealand to biologically control ragwort.

The Cinnabar Moth has black upper wings with symmetrical red bars on the outer wing edge and two red spots on the bottom. The underwing is a vibrant red contrasted with a black fluffy thorax.
Cinnabar Moth (Tyria jacobaeae) by Orangeaurochs via Flickr

Common Plume

Latin name: Emmelina monodactyla
Distribution: Common in England with increasing scarcity further North
Size: Small
Identification: This rather bizarre looking moth rests with the wings held away from the body, giving it a unique T shape.
Did you know?: These moths have clefts in their wings and plumes at the end of each division of the wing. 

A uniquely shaped moth, the Common Plume has an instantly recognisable 'T' shape. It is pale in colour with thin, horizontal wings and thin legs.
Common Plume Moth (Emmelina monodactyla) – Rictor Norton & David Allen via Flickr

Suggested reading:

Field Guide to the Moths of Great Britain and Ireland
Paperback | October 2018

The third edition of the Field Guide to the Moths of Great Britain and Ireland has been fully revised, updated and restructured, bringing it in line with the latest thinking in taxonomy.

 

 

Field Guide to the Micro-moths of Great Britain and Ireland                                                                     Paperback | December 2023

The fully revised and expanded second edition of the ground-breaking book. This is a complete guide to the Micro-moth families found in the UK. The second edition covers over 1,300 species with more than 1,500 detailed photographs and artworks.

 

British Moths: A Gateway Guide
Spiralbound | September 2021

British Moths: A Gateway Guide is a wonderful introduction to 350 species of the most common and eye-catching adult moths that you may encounter in the UK. Species are organised by season, and similar-looking moths are placed alongside one another for ease of identification.

 

Atlas of Britain & Ireland’s Larger Moths
Hardback | November 2019

Atlas of Britain and Ireland’s Larger Moths includes accounts for 866 macro-moth species, each with a distribution map showing current and historical occurrences, trends, status, a phenology chart and colour image.

 

 

Britain’s Day-Flying Moths: A Field Guide to the Day-Flying Moths of Great Britain and Ireland
Flexibound | July 2019

This concise photographic field guide helps you to identify the day-flying moths most likely to be seen in Great Britain and Ireland, combining photographs, clear and authoritative text and an easy-to-use design.

 

 

Micro-Moth Field Tips + Micro-Moth Field Tips, Volume 2: A Guide to Finding the Early Stages in Lancashire and Cheshire – A Chronological Guide from January to December
Paperback | December 2021

Micro-Moth Field Tips describes how to identify the early stages of more than 170 species of micro-moth larvae at all times of the year. There are 12 chapters, one for each month, as well as recommendations on what micro-moths to look for on field trips at different times of the year. Micro-Moth Field Tips, Volume 2 follows on from the enormous success of the first volume. Designed as being complementary to the first volume, the book has an introduction to the early stages of each family of micro-moths as well as many images of leaf mines.

Guide to the Day-flying Moths of Britain                 Unbound |  July 2006

This 8-page chart shows 103 species of day-flying macro-moths. Paintings show the adult moths at life size and in their natural resting postures. The text, arranged by family with full cross-referencing to images, provides further information on the habitats and distribution of illustrated species.

 

 

60ml Collecting Pot

These 60ml sampling containers are made from see-through polypropylene and have secure screw-on lids. They’re ideal for temporarily keeping small aquatic or terrestrial specimens.

 

 

 

Opticron Hand Lens 22mm 10x Magnification

This Opticron Hand Lens contains a high quality 23mm doublet lens, made of glass and provides excellent distortion-free magnification. The 10x magnification is recommended for general observations and this magnifier is the one most commonly recommended for all types of fieldwork.

NHBS Moth Trap Starter Kit

The NHBS moth trap is a lightweight and highly portable trap, tested and approved by Butterfly Conservation. The starter kit includes 3 x 60m clear collecting pots and the Concise Guide to the Moths of Great Britain and Ireland to help you observe and identify the species you find in your trap.

UV Safety Glasses

UV glasses are highly recommended when using equipment that emits UV light, such as moth traps.

 

Author Interview with Jon Dunn: The Glitter in the Green

Jon Dunn is a natural history writer, photographer and wildlife tour leader. He is the author of the fantastic Orchid Summer among other books, and his writing and photographs have been featured in Britain’s Mammals and numerous wildlife magazines and journals.

In his latest book, The Glitter in the Green, Jon documents his expeditions from the farthest reaches of Alaska to the tip of South America in Tierra del Fuego in search of hummingbirds. Weaving history and travel writing together, the book describes the special place hummingbirds have in both mythology and culture, all while addressing not only how hummingbirds have suffered in the past, but the threats they face today. Jon kindly agreed to answer some of our questions below.

When and how did you first discover hummingbirds and what is it that draws you to them?

I’ve got the Natural History Museum in London to thank for planting the seed that was to grow, over the years, into a full-blown hummingbird habit. I was a young kid in the 1980s, taken to London by my mother for a day doing the usual tourist things – she wisely saved a visit to NHM London until later in the day, as she knew once I was in there I wouldn’t want to leave.

Amongst the many exhibits one in particular caught me by surprise – a large glass cabinet filled with hummingbird taxidermy. I know, that’s a bit bleak by the standards of today, but back then all I had eyes for were the shapes, forms and colours of the birds. They were so very different to the birds I was used to seeing in the Somerset countryside around our home. After that, every now and again I’d see footage of hummingbirds on wildlife documentaries, and began to appreciate further just how remarkable they were – what Tim Dee described as ‘strange birds: not quite birds or somehow more than birds, birds 2.0, perhaps’.

As a naturalist and a storyteller, I’m a bit like a bowerbird, drawn to colour. Hummingbirds really have it all going on – their biology is one superlative after another; their plumage is jewel-like; they’re found throughout the Americas in almost every conceivable habitat; and they’ve fascinated mankind from our earliest recorded encounters with them – there’s a rich vein of stories to dig into. 

Were there any particular encounters that stood out for you during your research?

Seeing my first Marvellous Spatuletail caught me by surprise. They’re renowned for their plumage and rarity alike, so I was prepared to feel that cocktail of joy and relief familiar to any birder who’s just caught up with a keenly anticipated species. The reality though far exceeded that – the delicacy of the bird compared to the many other hummingbird species swirling around the clearing in question, those preposterous tail feathers, the culmination of waiting decades to see one… I found that a bird could be literally as well as metaphorically jaw-dropping.

There were plenty of other moments that I’ll hold in my heart, and they don’t all involve the iconic, rare species. One such was watching Golden-tailed Sapphires, a hummingbird that looks as if it’s been dipped in rainbows, feeding in a clearing in the immediate aftermath of a heavy rain shower. As the sun broke through the dripping vegetation and steaming air we were suddenly surrounded by myriad small rainbows through which the birds were flying. That moment was ephemeral, over almost as soon as it began, but it’s etched in my memory forever. 

Hummingbirds have long been venerated and romanticised in art and in your book you talk about the emotive response that hummingbirds elicit in people. Why do you think that this is?

I found myself asking myself that very question as my journey into their world unfolded… Hummingbirds certainly seem to touch something deep inside us. They featured in the mythology of the Aztecs; inspired the most dramatic of all of the immense geoglyphs carved into the desert floor by the Nazca; appear in renowned art and literature; and, to this day, are singled out for particular love by those whose gardens they frequent, people who would not necessarily identify themselves as birders.

I think it’s their character as much as their beauty that has always called to us – many species are confiding, and are happy to feed in close proximity to us. Over millennia we’ve given many animals ample cause to be shy of us – and indeed, down the years we’ve slaughtered hummingbirds in their millions for their feathers, whether they were to feature in Aztec status symbols, Catholic icons or on 19th century hats. Yet despite this, hummingbirds remain unphased by our presence. Perhaps there’s something subconsciously reassuring about that.    

In order to see some species, your expeditions took you to some very remote places. Did this present any challenges?

Inevitably there were some logistical challenges to contend with, not least having to reacquaint myself with horse-riding after a decades-long and deliberate avoidance of it! There were a couple of close encounters with large predators that were, in hindsight, more alarming than they felt at the time – as a naturalist, I was thrilled to get (very) close views of a puma… But perhaps the most challenging moment of all was landing in Bolivia at the very moment the country was taking to the streets to protest the outcome of a recent presidential election. There was an incident at a roadblock manned by armed men that was genuinely scary, with an outcome that hung in the balance for a terrifying instant, and could easily have ended badly.

Hummingbirds face many threats to their existence, including habitat loss, climate-change, deforestation, as you talk about in your book. Post-research, do you feel any optimism for these magnificent creatures?

This is a really difficult question. On the one hand, I learned of examples of conservation where hummingbirds – amongst other species, of course – were the beneficiaries of excellent conservation work at a local level. On the other hand, when you start to take a pragmatic long view of our impact to date on the habitats the birds rely upon across the Americas, it’s hard to remain upbeat. We’ve destroyed so much already, especially in the past century – and with a growing global population, the pressures of economic development are only going to intensify human activity and its impacts.    

I sometimes think there’s almost too much optimism expressed when talking about conservation challenges anywhere in the world – a narrative that suggests “if we only care enough, the [insert iconic species name here] can be saved”. And to a degree, that’s good – we’ve got to have hope, as the alternative is too dreadful to countenance – but given our impact to date, and in an uncertain future where the effects of climate change are still unfolding and will continue for many decades to come, to name just the biggest of the mounting pressures on the natural world, I’m not sure that I do feel terribly optimistic, least of all for those hummingbird species that have very localized populations, or depend upon very specific habitats. They’re undeniably vulnerable. But like Fox Mulder, I want to believe…   

 Do you have any plans for further books?

I do indeed… Having delved into the worlds of two of my personal favourites, terrestrial orchids and hummingbirds, in the last two books, the book I’m currently writing will have a wider focus – exploring the evolving relationship between humanity and the natural world. It’ll be a deep dive into a world of obsession, joy, exploitation and wonder – a place where the truth is stranger than fiction. 

 

The Glitter in the Green
By: Jon Dunn
Hardback | June 2021

 

All prices correct at the time of this article’s publication.

 

Author Interview with Penny Metal: Insectinside

As recently featured on BBC’s Springwatch, Insectinside is a fantastic book featuring hundreds of species of insect that have all been found in Warwick Gardens in Peckham by author, Penny Metal.

With Penny’s incredible photographs and often humorous social commentary, Insectinside is an inspiring look at the diversity you can find just beyond your doorstep, as well as the vital importance of our natural spaces.

Can you tell us about your background and how you came to write this book?

I have a background in graphic design and often work in the area of nature conservation. This means I get to see what projects are happening etc. I work from home and decided to spend my lunch breaks in my local park photographing and surveying insects. I learned about the insects, watched them and counted the sheer number of species, and realised that no one else had actually surveyed a small urban park extensively. The book came about as I wanted to show people what was living in the bushes and to put Peckham on the entomological map!

Insectinside is written from the unique perspective of the insects that dwell in Peckham Park. What inspired you to write this way, rather than in a more traditional prose?

I wanted to try a different way of presenting information that would ‘hook’ people and short stories were the way to go. A lot of people don’t like insects and comparing their lives to ours not only elevates them, it gives the reader another perspective on how wonderful they are, and you can add a bit of humour alongside topics which are happening at the time (gentrification, Brexit etc). I find them fun to write, and am often inspired by how an insect looks or acts and what is going on in the news and try and link the two together. It is a good way to introduce some of the lesser known insects. My strategy appears to have worked!

Do you have any favourite species that you would like to tell us about?

I am a big fan of wasps, especially parasitic wasps. My favourite is the Gasteruption jaculator and watching her squeeze herself into the tiniest beetle holes where the scissor bees nest to lay her eggs is a sight to behold.

Recreational places like parks might not always be considered for their conservation potential. What can you tell us about the significance of parkland in the UK?

I think parks have been overlooked as areas of conservation. They can be large places and they have to work hard – recreation, dog spaces, playgrounds, sports spaces, neat formal areas for aesthetics etc, lighting, and usually open 24 hours – but there is no reason why we can’t include habitats for our wildlife. A simple solution would be to leave areas un-mowed to grow wild. In the parks of my local area in London, large swathes of grasses and flowers have been left to mature and people have been really receptive to it. I think we are finally moving away from the Victorian ideal of neat and tidy!

With an ever-growing population in the UK, parklands are becoming increasingly busier. What do you think we need to do to protect our natural spaces?

Tell people to stop destroying them, and to take their rubbish home! Luckily there is more awareness now about the importance of our natural spaces, though there is a way to go yet to get everyone on board. Personally, I would like for our natural spaces to be so integrated into our lives that we can drop names like ‘nature reserve’ and just appreciate nature for what it is.

The book has a great many beautiful insect photographs, taken by yourself. Do you have any advice for aspiring macro-photographers?

Keep a sharp eye and a steady hand! Watch them to see how they move – for instance dragonflies tend to return to their perch a couple of times before they fly away for good.  And a sunny day with clouds is the best time to photograph flying insects as they stop and have a rest when the sun is hidden.

Insectinside
By: Penny Metal
Paperback | Due in stock soon |  £19.99

 

All prices correct at the time of this article’s publication.

 

 

 

 

 

 

 

Author interview with Elsa Panciroli: Beasts Before Us

Elsa Panciroli is a palaeontologist who studies the evolution and ecology of extinct animals – particularly mammals from the time of dinosaurs. She is a researcher based at the University of Oxford and an associate researcher at the National Museum of Scotland. A keen science communicator, she has contributed to The Guardian, Palaeontology Online and Biological Sciences Review, and co-hosts the Palaeocast podcast. Beasts Before Us is her first book and tells the amazing story of early mammal evolution, taking the reader back well before the dinosaurs even rose to prominence. Leading up to publication, we reached out to Elsa and asked her some questions.

Elsa Panciroli on the Isle of Skye

You write that you started your palaeontology career interested in dinosaurs and Ice Age megafauna. What turned you on to the path of our mammal ancestors?

Like so many things in life, it was serendipity. During my masters degree the renowned mammal palaeontologist, Prof Christine Janis, moved back to the UK from the US. I’d recently read her paper on giant extinct kangaroos and I was excited to meet her and learn more. It turned out she was offering a project studying mammal ankle bones, so although there were dinosaur projects available, I jumped at the chance to work with Christine. I learned so much from her, she was (and still is) a brilliant mentor. I soon realised what a lot of questions were still to be answered about extinct mammals. Afterwards, I did my PhD on little-known Jurassic mammals from Scotland, and started exploring their even more ancient past – I just couldn’t believe what I discovered! That’s why I wanted to write the book, to share what I had learned.

Given that we are so biased to mammals where, for example, conservation is concerned, why do you think that there has been so little mainstream interest in early mammal evolution? Your book shows that there is a fascinating story playing out before dinosaurs even evolved. Do the dinosaurs in that sense enjoy the advantage of incumbency in our imagination? Or do the details of mammal evolution not easily lend themselves to telling a captivating story?

I disagree that mammal evolution doesn’t lend itself to story-telling, but the many authors who’ve tackled the subject up to now focused on recent evolution and assumed everything before then wasn’t relevant. I wrote Beasts Before Us because our ancient relatives are incredible! I was quite shocked by this whole plethora of animals that not only predate the dinosaurs, but were incredibly successful, bizarre and exciting. They were the first to evolve iconic features we are fascinated by today, like large body size, sabre-teeth and gnarly horns. It’s just the icing on the cake that they are actually related to us. I wanted to show people the history of mammals isn’t a story of waiting in the wings for the dinosaurs to disappear, but of the stunning success our lineage (synapsids) over the last 350 million years, including before dinosaurs even existed.

I think there are a few different reasons why early mammal evolution doesn’t get the same love as dinosaurs. Dinosaurs are kind of otherworldly – in fact you might argue they are almost mythical – so naturally this makes them extremely compelling. As a result, people forget to look beyond them at what else has happened in evolutionary history. The media don’t help, because they overly focus on dinosaurs and always plaster them centre stage. Dinosaurs have become a touchstone for ancient, and other discoveries are always placed in relation to them. There is a lot of dino-noise to get through if you want to tell the stories of other animal groups!

An important theme in your book is that evolution is not a march of progress but a process of adaptation to current circumstances. It seems that our early ancestors thoroughly explored the space of possibilities and pioneered both behaviours (e.g. digging underground burrows) and morphology (e.g. sabre-toothed therapsids) that would later evolve again independently through convergent evolution. Are there examples of morphological adaptations or suspected behaviours in early mammals that have not reoccurred in more recent mammal evolution?

That’s a really interesting question! As we make new fossil discoveries, it’s increasingly apparent that there is very little happening on Earth today that hasn’t been done multiple times before by other animals. Of the top of my head, I can’t think of anything they – or other animals – did in the past that hasn’t reappeared again, nature is just like that. If anyone can think of something they can always tweet me about it!

I thought one very interesting idea you mention concerns the adaptive radiation of therians, i.e. the group that gave rise to both marsupials and the placental mammals to which we belong. They remained a species-poor group until after the dinosaurs went extinct, and it is traditionally thought it was competition from the dinosaurs that held them back. Instead, here, and in the Current Biology paper that just been published (congratulations, by the way), you argue that it was competition from other mammaliaform groups that held back the therians. Can you give us the elevator pitch in support of this idea?

Part of the problem is that the fossil record can be very misleading, and we can’t easily separate cause and effect. People saw that mammals became larger when non-bird dinosaurs disappeared, and so they drew a causal line between the two. To tackle this issue more robustly, my co-authors and I compiled big datasets of the changes taking place in the skeletons and teeth of mammals from the time of dinosaurs, and just afterwards. Our results showed that in the earlier-branching groups of mammals the number of changes taking place in their bodies continued to rise – in other words, they were still splitting into new groups and evolving new specialisations. But for the therian mammals (which include the ancestors and relatives of all modern mammals except platypuses and echidna), the number of changes was pretty flat in the time of dinosaurs. That is, until the disappearance of the earlier mammal groups – some of which didn’t become extinct until after the non-bird dinosaurs. Crucially, it wasn’t until these later extinctions that we really see therians diversifying more widely, therefore showing that it was competition with the other mammals that had been preventing them from diversifying prior to that point.

You mention Clashach quarry in Scotland as a site of great scientific interest due to its record of fossil footprints. I often shudder to think how many body and trace fossils are destroyed forever during mining and construction activities. Do you generally find commercial operators willing or interested to cease or move activities when fossils are found? Or would most rather just quietly ignore them to prevent costly delays?

Although you’re right that fossils are destroyed during extraction, we can’t forget that most fossils wouldn’t have been discovered in the first place if it wasn’t for quarrying and mining! The ties between extractive industries and palaeontology are really important, but they also form part of the colonialist history of the discipline, which we must acknowledge. The attitude of extraction companies varies from place to place, but many are really keen to support scientific study as much as they can. For example I know several have welcomed info sheets and talks from experts on how to recognise fossils, so that the workers know what to look out for. They’ll often put aside potential fossil finds so that they can be examined and studied. It’s hard to find a balance between industry and conservation, but for the most part quarry workers are just as excited about fossils as everyone else!

In your book, you broach the sensitive issue of decolonisation, acknowledging the often dark and unsavoury history of our scientific disciplines. Beyond words, what actions do you think are necessary to get to terms with our past? For example, is the repatriation of museum specimens always the preferred option?

Decolonising science and museum collections is a complex subject, and I’m not an expert, but the first step for all of us is to listen: we need to hear about, understand, and explore the legacy of colonialism and empire on our lives, not dismiss it. Repatriation of objects is appropriate in some cases, but there are many other things that need to happen as well. For example many objects are completely separated from their context – where they came from, the circumstances of their collection, and who collected them. We need to ask ourselves what the purpose of collections actually is now, who they are for? The scientific system itself was built in such a way that it biases who carries out research, how we carry it out, how it’s published, and who benefits. It’s going to take time and thought to rebuild it to be more equitable.

I was very impressed with the visual language you use throughout this book and read that you have a keen interest in science communication. I am a regular listener of the Palaeocast podcast that you co-host, but beyond that, what other platforms and outlets do you contribute to?

I have to admit I don’t keep a regular online presence at the moment, except for my twitter feed! I used to blog, but as I’ve ended up writing more articles (I wrote for The Guardian for a while, and some other freelance work) I’ve had less time. However, when possible I place content on my YouTube channel, particularly short videos explaining new research, or talking about fossils. I’ve also done some readings of Beasts Before Us, if you want a wee taster!

Beasts Before Us is your first book. Now that it has been published, is it time to turn your attention back to research, or was the experience rewarding enough that we can look forward to more books in the future?

I’ve actually been carrying out my research alongside writing, which has been pretty exhausting! It’ll be nice to devote more attention just to the research for a while. Having said that, I do have a second book lined up, and many more ideas in the queue, so you can definitely expect more in the future!

 

Beasts Before Us: The Untold Story of Mammal Origins and Evolution
By: Elsa Panciroli

 

All prices correct at the time of this article’s publication.

Author Interview with Adam Nicolson: The Sea Is Not Made of Water

From the author of The Seabird’s Cry, Adam Nicolson’s new book The Sea Is Not Made of Water offers a glimpse into the intricacies and minutiae of the intertidal zone. Blending ecology and human history, poetry and prose, Adam takes us on a fascinating journey to the shore.

Adam is a journalist and prize-winning author of books on history, landscape and nature – among many other accolades, he won the 2018 Wainwright Prize for Nature Writing. He has also made several television and radio series on a variety of subjects.

First of all, we loved The Seabird’s Cry and were very excited to learn of The Sea Is Not Made of Water about intertidal zones. Could you tell us about what drew you to this habitat and the inspiration behind your book?

For nearly thirty years now I have been going to stay in a small house at the head of a bay on the west coast of Scotland. It is somewhere my wife’s family have been going for generations and now our children and grandchildren love it too. It has everything you might long for from a place like that: cliffs, woods, waterfalls, a dark beach made of basalt sands, a lighthouse, a ruined castle, stories, beauty, birds, fish; but one thing it did not have because of the geology, was a rockpool. For years I have dreamed of making one – a place of stillness set in the tide, and this book is the story of how I made three of them in different parts of the bay; one dug in with a pickaxe; one made by damming a narrow exit to the sea from a hollow so that the dam held the pool behind it; and one by making a circular wall low down in the intertidal.

The foreshore belongs here to the Scottish crown, and so I got permission to do this first and then set about making the pools – wanting them to be cups of what I learned to call bio-receptivity – beginning with quite literally a rock-pool, an empty planetary space, and then waiting to see what the sea would deliver to them. An enlargement of the habitat. A tiny gesture to counteract the lack of accommodation we are all making for the natural world. In a way, no more than making sandcastles, but sandcastles that would invite their inhabitants in and would last more than a single tide.

Shorelines and rock pools are incredibly biodiverse environments; how did you decide which species to write about?

It was not about rarities. I thought for a while I should call the book ‘All the Usual Beauty’. And anyway the species selected themselves. I began at the top of the beach at the spring equinox, although there was not a hint of spring, when I started poking around in the seaweeds thrown up there by the winter storms. Nothing else seemed to be alive on this frozen March day, but lift away the lid of weed and quite literally the sandhoppers sprang into life around me. Again and again they went though their routine: leap, wriggle, play dead, leap, wriggle, play dead. Almost toy-like in their repetitions.

And so that provided the model – see what was there and look carefully at it. Of course, books like mine are entirely parasitic on the work of many generations of biologists and that too turned out to be the pattern. Watch the sand hoppers and then read about them. Read about them and see how much of what I read I could find on the shore. With prawns, winkles, shore crabs, anemones, limpets, sea-stars, urchins and barnacles, I simply oscillated between the pools and my books: what was there? What had people discovered about them? How did they interact? What were the principles governing their presence or absence? And with all of that came the repeated and slightly sobering realisation that unless I knew to look for something it was very difficult to see it was there. Mysteriously, we are often blind to what is in front of our eyes.

Did you discover anything particularly interesting that you were previously unaware of during your research?

So much! I never knew that sandhoppers could inherit from their parents an understanding of where the sea was and how to get there. That winkles can tell if a crab has been in their pool. That crabs, even in the tiniest of larval stages, can recognise the movements and timings of the tides. That sea anemones can identify other sea anemones that are not their relations and effectively destroy them. That prawns have an imagination – that might sound like too much, but it has been shown that they can remember past pain and project it into present and future anxieties. Anxiety is different from fear; it is a fear of what might be there. In other words a prawn can think beyond its present reality.

Some of my most treasured childhood memories involve investigating Dorset shorelines and delighting in the incredible variety of species I would find there. What do you think it is about the shoreline that people connect with so strongly?

I think maybe the shore is so alluring because it is both so strange and so easily to hand. It is a revelation of another world a yard or two away from our own. The temptation is to think of the pool as a natural garden, but it is a very odd and very wild garden. Looking perhaps as settled and delicate as a painting but in fact a theatre and cockpit of competition and rivalry. And garden whose walls are dissolved twice a day, an enclosure that becomes part of the general world with every high tide. That ambiguity is what entranced me, the sense of its being a micro-ocean, a micro-arcadia, a micro-laboratory in which all kinds of intimacies and precision in natural beings can be witnessed an inch beneath your nose.

Although adaptable, rocky shore inhabitants are not invincible, what do you think is the biggest threat to the rocky shore ecosystem and are some species more at risk than others?

Sea-level rise should not cause the inhabitants of rocky shores too many problems. They will climb the rocks in time with the water. But other anthropogenic effects are quite likely to be catastrophic. Animals that depend on their shell for protection are living in an increasingly hostile world. Everywhere in the North Atlantic outside Europe, as the Dutch evolutionary biologist Geerat J. Vermeij has written, an increase in shell thickness has been taken as a response ‘to the spread of the introduced European green crab (Carcinus maenas), but these changes may also have resulted from an overall increase in the abundance of native shell-crushing crabs (Cancer spp.) and lobsters (Homarus americanus) as the predators (including cod) of these crustaceans were overfished’.

The destruction of the cod and the collapse of their position as an apex predator in the Atlantic has made it a sea of claws. That hugely increased claw count, and competition between the clawed animals, has risen to the point where the shell-dwellers are feeling the pressure and have responded as shell-dwellers and shell-wearers must: by thickening their defences and toughening their lives.

But modern life has provided them with another hurdle: the acidification of the world ocean. One-third of all the carbon dioxide that has been emitted since the beginning of the Industrial Revolution has been absorbed by seawater, turning it acid. Making shells and skeletons, drawing calcium carbonate from the water, is more difficult in an acid sea. All kinds of ripple effects will spread out from that: more crabs, fewer winkles, denser algae and a disruption of the entire coastal ecosystem.

The effect is more than purely chemical. When sea-fish are exposed to acid water, their senses of smell and hearing are both disrupted. Young fish find it more difficult to learn, become less frightened by danger and are even attracted to the smell of predators. The same now seems to be true of shellfish. Acid water is distorting the minds of animals in the entire ecosystem.

Do you have any further projects or books in the pipeline?

I do! I am writing a long piece on English chalk-streams and also slowly researching a book about the birds in the wood at home. And I would love to write something one day about the mammals of the Scottish sea. Otters, seals, whales and dolphins. One day!

The Sea Is Not Made of Water
By: Adam Nicolson
Hardback | Due June 2021 | £16.99 £19.99

 

All prices correct at the time of this article’s publication.

NHBS In the Field – H2a Hydrophone

The H2a hydrophone from Aquarian Audio is a mid-range hydrophone, allowing high quality recordings for professionals, whilst remaining affordable for marine naturalists.

Like most hydrophones, the H2a is powered via a compatible recording device. Available with either a TRS 3.5mm jack (plug-in power required), or XLR connector (phantom power required) and a variety of cable lengths, you are sure to find an option suitable for your requirements.

How We Tested

We tested the H2a hydrophone across two days in varying weather conditions in early June 2021.

Our kit was made up of the 3.5mm jack H2a hydrophone, in conjunction with an old DR-05 Tascam recorder and a pair of earphones. The DR-05 is actually a discontinued model, however we do sell it’s successor, the updated DR-05X. The H2a will work well with any recorder with a 3.5mm port that can provide plug-in power. Many recorders offer this ability, but if you are unsure please do check your manual.

Setting up the hydrophone system was very straightforward. Once plug-in power was switched on via the recorder’s menu settings, we simply plugged in the H2a to the mic-in socket and were ready to begin.

Tests were performed in a number of environments including rockpools, off a small boat in deeper water and a controlled environment (container of water). Between these locations, we did find adjusting the gain accordingly was necessary, however this was straightforward, using the Tascam recorder’s input level controls.

In shallower, more disturbed water we tried attaching the cable to a makeshift ‘boom pole’ aiming to gain greater control over the movement of the hydrophone while reducing handling noise.

It is built to be durable, with a stainless steel core and rubber covering, but we still handled it with care and rinsed and dried it after each use. Aquarian themselves say the H2a can survive accidental drops, however we chose not to test this!

Recordings were made on the Tascam device, to a micro-SD card and then transferred to a computer. The open-source audio program Audacity was used to view the waveform, including adjusting levels, and also allowed us to plot the frequency spectrum.

What we found

Our initial impression was that the H2a was surprisingly lightweight and compact, measuring just 25mm x 46mm (without the cable) and weighing little over a hundred grams. This made for easy packing in a small rucksack.

The hydrophone comes in neat cardboard packaging which is not particularly suitable for use on location. Despite the hardiness of the hydrophone itself, it would certainly provide peace of mind to purchase or use some form of carry case. We would not, however, recommend a waterproof case as it may trap moisture and salts that could eventually lead to corrosion.

The hydrophone is highly sensitive and so was vulnerable to signal overload if knocked accidentally or handled roughly. During recording, our main obstacle was noise from cable handling, which was noticeable during playback. This is to be expected with any hydrophone and certainly was not the worst I have experienced, but was still slightly frustrating. We quickly learned to ensure the cable was lowered ‘hand over hand’ into deep water to minimise noise.

Even with only a 3 metre cable, slight tangling did occur, which over time could lead to damage. For future uses with longer cables we would consider investing in or making a cable spool/reel. A spool would likely also reduce the experienced cable handling noise.

In shallower water, especially along the tide line, the makeshift pole attachment was very successful and made a significant difference to cable noise level. It also allowed us to position the hydrophone with precision and avoid damage that could have occured from the stronger waves dragging it towards nearby rocks.

When working from the boat in deeper water, we simply released the cable by hand as the current was slow. We found the shape and weighting (high specific gravity) to be a clever design that kept the hydrophone more-or-less vertical even in currents. Although it is worth noting that we only tested this ourselves in relatively slow moving water.

Below is a sequence of recordings taken in varying locations. The first exhibits the sound produced by the paddling of the small boat. The hydrophone performed very well while being dragged behind the boat, catching the bubbling as the paddles broke the surface.

Of particular interest to us in the field was the man-made noise pollution from the nearby (0.5 miles away) docks. Despite being rather un-noticeable by air, loud hammering was clear through the hydrophone.

The final recording in the audio above was taken at a rising tide, with gentle waves shifting the sand and sediment below the hydrophone.

While we had heard reports that some people have found sensitivity dropping off at higher frequencies with this unit and other hydrophones, our field tests produced recorded sounds up to 10kHz easily.

Our Opinion

Clear audio with limited unwanted noise was easily produced with the H2a hydrophone. It provides a fantastic way for ocean lovers and scientists alike to explore life underwater.

A few practical accessories such as a pole and spool would be worth considering as they can really improve audio quality while also making work in the field just that little bit simpler.

With further experimentation and potentially a bit of luck with interesting sound sources, I am confident that the H2a will continue to yield high quality recordings at a very fair price point.


The H2a hydrophone is available from the NHBS website on its own or as part of a kit including the Tascam DR-05X recorder.

Note: When deciding upon a model it is recommended to choose based first and foremost on compatibility with your recorder’s connector type. XLR is however, often the preferred choice for professionals due in part to reduced electromagnetic interference.

Visit nhbs.com to view our full range of hydrophones. If you have any questions about our range or would like some advice on the right product for you, then please contact us via email at customer.services@nhbs.com or phone on 01803 865913.

 

An Evening at Sharpham – Bat and insect survey

The lengthening evenings of late Spring or early Summer are an ideal time for an evening wildlife walk. Now the vegetation has become more lush and the air has become warmer, the insects form in thicker clouds and the bats are now on the wing.

The Sharpham estate is a 550-acre area which runs alongside the River Dart just outside Totnes. This historic landscape is home to the Sharpham Trust, an educational charity whose Wild for People project aims to rewild areas of the estate and enhance biodiversity in the region. To read more about the history of the Sharpham Estate and the launch of their Wild for People project, click here.

A few of us from NHBS walked up to the Sharpham estate where we met a group of Ambios’s conservation volunteers and trainees for an evening wildlife walk. We brought a selection of bat detectors with us and explained the differences between our most popular professional detectors. We distributed any active bat detectors among the volunteers and showed them how each type worked. We then left the farm just as dusk was settling with detectors armed and ready.

As we wandered the footpaths and fields of the estate, we watched several Noctule and Leisler’s bats commute high above the fields, along with some Common and Soprano pipistrelles zipping along the hedgeline foraging.

We then cut across a field to a dead tree where NHBS Wildlife Equipment Specialist Josh had previously set some insect bait traps. The traps were baited with a mix of banana and beer and had been set in the hopes of catching saproxylic beetles emerging from dead wood.

Josh has also been monitoring the beetle diversity of Sharpham through a series of pitfall traps placed across the estate, although prior to our walk they had unfortunately been closed due to heavy rain. Unfortunately no beetles were found in the traps this time, but we did spot a variety of species scurrying along the field and forest paths including Anchomenus dorsalis, Dromius agilis and Staphylinus dimidiaticornis, along with the very common Nebria brevicollis (gazelle beetle) and Pterostichus madidus (black clock beetle).

Once it was much darker, on our way back up to the farm, we also had the pleasure of listening to the alien-like call of a sitting Lesser Horseshoe bat that was perched just meters away from the group. It made for an exciting end to the walk and we hope to detect even more bat species through passive detector recordings.


See the full range of bat detectors and insect survey equipment on the NHBS website.

To find out more about Ambios and the work of Lower Sharpham Farm, please visit https://www.ambios.net/.

Conservation Land Management: Summer 2021

Conservation Land Management (CLM) magazine is designed for those involved in managing land for conservation, and is an invaluable source of information on good conservation management practice. Here, Assistant Editor Catherine Mitson provides a summary of the range of articles featured in the new Summer issue.

Monitoring and surveying techniques in conservation and ecology are constantly changing and improving. The use of thermal imaging is one example of a non-invasive method that is becoming a popular choice for those involved in wildlife surveys. Dan Brown, ecologist and founder of Wild Discovery, provides an overview of thermal imaging and the potential for its wider application in species monitoring, surveying and ecological consultancy, while still keeping some of its limitations in mind.

Citizen science also plays an important role in species surveys, and Claire Boothby, Training and Surveys Officer for the Bats in Churches project, describes an opportunity for the public to get involved in bat surveys. Bats can often be found roosting in churches, but due to the open roof structure of many of these buildings, the architecture and items housed inside are susceptible to damage from bat droppings and urine, to the despair of church users. The Bats in Churches project is trialling mitigation measures to enable both humans and bats to use churches harmoniously. This article showcases some churches where these mitigation measures have been implemented successfully and describes how the public can take part in the Bats in Churches Study to improve our current knowledge of how bats use churches.

Also in this issue, James Adler and Steve Proud describe the Pirbright Red Deer Project. The Pirbright Range Danger Area (RDA) in Surrey is one of the most extensive and least disturbed tracts of heathland in southern Britain but as this is an active firing range, traditional means of heathland management are not practical. Instead, red deer have been used for conservation grazing to keep vegetation in check, to the benefit of the rarities found at Pirbright. This article discusses the importance of Pirbright and the development, rationale, and results to date of the Red Deer Project.

Jos Milner takes us north to the Cairngorms National Park where the Our Water Environment project, delivered by the Tomintoul & Glenlivet Landscape Partnership, has set out to restore and enhance the river Avon catchment. Here the river bank has suffered from bank erosion and sedimentation as a result of overgrazing and loss of riparian tree cover. This article explains how green engineering techniques, which use natural materials such as logs or coir matting as a form of bank protection, have been implemented on the River Avon, and how these could provide an opportunity for landscape-scale river restoration.

The final article in the Summer issue looks at how one farmer changed the way he farms to benefit wildlife. Martin Lines is a third-generation farmer and contractor, and with the advice provided by Farm Wildlife, he no longer uses insecticides on his land and has instead shifted to an Integrated Pest Management approach. Kathryn Smith and Martin Lines discuss what this has meant for practical farming operations, and the impact this has had on both crop yields and wildlife.

In this and every issue you can expect to see Briefing, keeping you up to date on the latest training courses, events and publications, and On the ground which provides helpful tips or updates on products relevant to land management.

Other features that regularly appear in CLM include Viewpoint, a similar length to our main articles, but here authors can voice their own views on various conservation issues, and Review, which can include letters from readers or updates from our authors.

CLM is published four times a year in March, June, September and December, and is available by subscription only, delivered straight to your door. Subscriptions start from £22 per year. Previous back issues are also available to purchase individually (subject to availability).

If you are involved in a conservation project and think your experiences could be useful to other practitioners, we would love to hear from you. If you are interested in writing for CLM feel free to contact us – we will be happy to discuss your ideas with you.