The NHBS Guide to Hand Lenses

The possession of a hand lens is one of the defining characteristics of a naturalist.

We use them for everything from peering at beetle genitalia and examining floral characters, to examining the arrangement of teeth in small mammal jaw bones. There are a wide variety of hand lenses on the market so how do you decide which lens is best for you? This article contains all the information you need to make an informed choice.

Glass versus plastic lens?

The optic in a hand lens can be made from glass or plastic. Serious naturalists and professionals will always choose a glass lens. Plastic lenses are generally more affordable and lighter but are of lower optical quality and are more difficult to clean. Plastic hand lenses and magnifiers, however, can be a good choice for schools and young children, for these users have a look at the Hand Held Magnifier.

How many optical elements?

Canon 400mm

An element is an individual piece of glass within a lens. When you look through a high quality camera lens you will typically be viewing what’s in front of the lens through four to six lens elements, as well as other elements used for focusing and zooming (see image below right).

Paul Canon EF 400mm f/4 DO IS USM By Paul Chin

Hand lenses are constructed with one (singlet), two (doublet) or three (triplet) lens elements. Each one is specially shaped to correct for a particular type of optical distortion, so the more elements, the higher quality the image.

 

The highest quality lenses that we offer are the triplet products made by Kite and Belomo. These offer a bright, crystal clear and undistorted view of your subject. The images afforded by these optics will impress the user whatever their field of work is, be it geology, entomology or botany.

 

N.B. There is a brand of hand lens / loupe called “Triplet”. Please note that despite the brand name this popular product has one lens (singlet).

 

If you are interested in obtaining a doublet hand lens you should consider those that are manufactured by Opticron and also Kite. Opticron will be a familiar name if you have ever researched the purchase of a pair of binoculars and their hand lenses provide excellent distortion free magnification at 6x, 10x and 15x.

Magnification

A 10x magnification hand lens will be more than adequate for most purposes. Higher magnification lenses tend to be harder to use but are very useful for viewing extremely small objects. If you are unsure of which magnification you need, or think you may need several different lenses, you might consider the Triple Hand Lens (x3, x4 and x5).

Lens diameter

Large diameter lenses provide a wider field of view which means that they are easier to use but they are slightly more expensive to produce.

How hand leOpticron Hand lens, 23mm, 10x magnificationnses are named

Hand lenses are named in the same way as binoculars, with both the lens diameter and the magnification included in the name. For example, the Opticron Hand Lens, 23mm, 10x Magnification has a 23mm diameter lens and provides 10x magnification.

LED Option

Some hand lenses such as the LED Triplet Loupe Hand Lens 10x 21mm possess LED lighting in order to illuminate the object that you are viewing. This option can greatly improve your viewing experience and can be particularly valuable in low light conditions. Bat workers have expressed how useful these can be when looking for the key identifying features of a specimen held in the hand. Using a lens with LED can reduce stress on the bat because it means that you do not have to point the beam of your head torch directly at the animal.

Using your hand lens

Finally, a quick note on hand lens technique. To use your hand lens correctly, hold the lens close to your eye and then either a) move the subject closer to your eye until it comes in to focus or b) move your head (and the hand lens) closer to the subject until it comes into focus. It’s easy with a little practice so don’t get put off if you find a new hand lens difficult at first. Expect to get close up to what you’re examining – it’s quite common to see naturalists crawling around on the ground to get close to a plant they’re identifying.

Keeping your hand lens safe

It can be very hard to find a much-loved hand lens dropped in long grass or woodland. To prevent this happening, we recommend a lanyard for your hand lens – this has two functions: a) if you have it round your neck you won’t drop it, and b) if you put it down somewhere the bright blue lanyard is easy to spot.

For storage and transport purposes most hand lenses come equipped with either a storage pouch or a plastic case. These enable you to keep your optic safe and reduce the risk of scratches or knocks occurring, especially when it is being carried in a pocket or bag. Spare leather pouches are available for the Triplet Loupe 10x 21mm but these may fit other lenses as well – we are happy to check before you buy.

Our full range of lenses and magnifiers can be found at nhbs.com.

The NHBS Guide to Badger Gates

The European Badger (Meles meles) is one of the most iconic species found on the British Isles. These shy and elusive animals spend much of their time during the day hidden away within their extensive underground setts, emerging around dusk to forage on smaller mammals, earthworms, roots, bulbs and fruit.

Within their territories, badgers will follow established routes between foraging areas. When these pathways become obstructed by fencing, such as exclusion fencing for stock or deer, badgers will often dig under the obstruction to regain access to a familiar site and in doing so they may cause damage to the fence and allow in potentially unwanted species. In these circumstances, many developers will install a badger gate to allow badgers to freely access the site. These rectangular gates are constructed of either wood or metal and often feature locking mechanisms to ensure badgers can only pass through in a certain direction.

Although badgers are protected under the Protection of Badgers Act 1992, there are situations where developers need to temporarily or permanently exclude badgers from areas. This may be when they, or their setts, could be at risk of harm or disturbance. In these circumstances, and under acquisition of a license, one-way badger gates can be installed in sett entrances or in fencing surrounding a development to gradually exclude badgers from the area. These badgers will then either relocate to a new territory or to a nearby artificially-created sett.

At NHBS we manufacture a range of badger gates and this article will outline how they can be installed and used in different badger mitigation projects.

Softwood Badger Gate

This softwood badger gate has been designed in accordance with the specifications outlined by Natural England (available here) and is an excellent economic choice for many projects. It is constructed from untreated FSC-certified timber, which ensures badgers will not be harmed if they ingest any chewed wood. This gate has been designed so that it will not jam following periods of rain when the wood may swell.

The softwood gate is suitable for use where badgers require access through a fence. This gate can also be used in exclusion projects; however unlike our aluminium gates they can be damaged by chewing and often have a shorter lifespan.

 

  • Price: £25.99 inc VAT £27.95
  • Frame Dimensions: 450mm (H) x 285mm (W)
  • Entrance Dimensions: 250mm (H) x 200mm (W)
  • Material: Untreated FSC timber
  • Weight: 2.1kg

Access Badger Gate

The access badger gate is constructed from marine grade aluminium which ensures it is strong enough for repeated use while keeping it lighter than most steel gates. It features a heavy-duty grill panel which allows badgers to view what is on the other side of the gate, which can encourage some badgers to pass through. It has pointed legs which should be driven into the ground using a wooden mallet, however a hammer can also be used with a block of wood (striking the frame directly may cause warping and damage). The gate has two locking tabs that can be adjusted using a size 10 spanner to allow either two-way or one-way access.

This gate is designed for use in long-term projects where badgers need access through stock or deer fencing. For exclusion projects we would recommend our exclusion gates.

 

  • Price: £73.50 inc VAT
  • Frame Dimensions: 595mm (H) x 295mm (W)
  • Entrance Dimensions: 320mm (H) x 220mm (W)
  • Material: Marine Grade Aluminium
  • Weight: 3kg

Exclusion Badger Gate

The exclusion badger gate is also constructed from marine grade aluminium and comes fitted with a solid gate flap. This solid door has been designed based on evidence that some badgers can learn to use their claws to lift grill gates open. Another feature of this gate is that it does not have legs. This allows the gate to be positioned either vertically or horizontally  in awkward sett entrances where a typical vertical gate would not be suitable. By installing this gate ecologists and developers can be confident that badgers will not be able to re-enter an exclusion zone.

This gate is also available with pointed legs, for installation within exclusion fencing.

 

  • Price: £73.50 inc VAT
  • Frame Dimensions: 400mm (H) x 295mm (W)
  • Entrance Dimensions: 320mm (H) x 220mm (W)
  • Material: Marine Grade Aluminium
  • Weight: 2.6kg

Accessories

Badger Fencing

 

All of our gates can be incorporated into this high tensile wire fencing.  It can be erected as a freestanding barrier or installed across a sett to prevent badgers from digging to form new entrances or to get around any installed gates.

Price: £245 (50m)

Stainless Steel Cable Ties


These strong, corrosion resistant cable ties can be used to quickly and easily secure a badger gate frame to the surrounding fencing.

Price: £8.50 (pack of 20)

Caudon® High Tensile Steel Pegs

These steel pegs are excellent for securing fencing to the ground, particularly in areas where badgers are prone to tunneling. These pegs can also be driven through the access and exclusion badger gates to provide a firmer placement.

Price: £0.60 each

Further Reading:

Badger Behaviour, Conservation and Rehabilitation: 70 Years of Getting to Know Badgers
Paperback | Sep 2015
£19.99

 

 

 

Badgers
Hardback | May 2017
£15.99

 

 

 

The Badger
Paperback | Sep 2010
£4.99

 

 

 

Biology and Conservation of Musteloids
Paperback | Oct 2017
£44.99

 

 

 

Please note that prices stated in this blog post are correct at the time of publishing and are subject to change at any time.

NHBS Guide to Dormouse Survey Equipment

Dormice are a distinctive family of rodents, found widely across Eurasia and Africa. The Hazel Dormouse (Muscardinus avellanarius) is a native British species which resides primarily in deciduous woodland. They are protected by EU law because of their rapidly declining numbers – studies suggest they have suffered a 72% population reduction in the last 22 years. Dormice are an important bioindicator as they are particularly sensitive to habitat and population fragmentation, so their presence is an indication of habitat integrity.

To enforce legal protection and ensure the success of conservation projects, current data about the distribution of Hazel Dormice is very important. A variety of survey equipment and methods can be used by licenced dormouse handlers and wildlife enthusiasts.

Nest Boxes

Perhaps the simplest survey technique to determine dormouse presence is searching for the nest box residents. Dormouse nest boxes are largely similar to standard bird boxes, but with the entrance hole facing the tree. Nest boxes can be important conservation tools as they can boost the local dormouse population density and aid re-introduction schemes.

The Standard Dormouse Nest Box is built from FSC softwood and has a removable lid with a wire closure for monitoring. This box can also come with a perspex inner screen allowing  surveyors to check the boxes inhabitants, without the risk of escape or  injury.

The more resilient Heavy Duty Dormouse Box is made from thicker  ¾” FSC marine plywood and is ideal for long-term monitoring projects. 

Dormouse Tubes

Dormouse nest tubes are a cheap, easy and popular method of determining the presence of dormice within a habitat. They can be an effective alternative to using wooden nest boxes.

The tubes consist of a wooden tray and a nesting tube. Dormice make their nests in the tubes and it is these that are used as indicators of their presence in the habitat. Nest tubes can be set up and checked without a licence until the first evidence of dormouse activity is found. After that, only a licensed handler can check them. For attaching to a tree, Hook and Loop Strapping is a more environmentally friendly alternative to plastic cable ties, as they are reusable, reducing plastic waste.

Dormouse Footprint Tunnels

The latest dormouse surveying technique uses footprint tunnels. This technique was created by Suffolk Wildlife Trust with PTES funding and has since been recommended in the CIEEM magazine In Practice in September 2018.

It is a non-invasive survey technique, which does not require a licence as the chance of disturbing dormice is very low. The 40cm tube, houses a wooden platform which contains the charcoal ink and paper on which footprints are left. Compared with nest tube surveys, footprint tunnels can reduce the survey period required and provide an indication of the presence or likely absence of dormice at a site.

Dormouse Nut Hunting

Dormice leave very characteristic marks when they eat Hazel nuts. They gnaw a round hole in the shell leaving a smooth edge with very few teeth marks, unlike mice or voles. Systematic nut searches under Hazel trees are still regarded as one of the best survey techniques, only hand lenses and a keen eye are required.

Accessories and books

Below are some accessories and books that are commonly used for dormouse surveys and monitoring:

Small Mammal Holding Bag
£3.60
Pesola Light-Line Spring Scales
From £35.00

Pesola PTS3000 Electronic Scale

£126

Heavy Duty Extra-Large Polythene Sample Bags
£0.70 per bag

Animal Handling Gloves
£5.69 5.99

LED Telescopic Inspection Mirror
£11.99 

How to Find and Identify Mammals
£11.99

Britain’s Mammals: A field guide to the mammals of Britain and Ireland
£12.99

Continue reading “NHBS Guide to Dormouse Survey Equipment”

NHBS Guide to Night Vision and Thermal Optics

There are many scenarios where our attempts to observe and survey certain species are hampered by our limited sensory systems. Many animals are difficult to detect because they utilise cryptic colouration or disruptive patterns, or they have evolved ingenious behaviours to conceal themselves within their environment. In other cases, environmental conditions such as low light levels or fog, can reduce visibility and disguise even some of our most obvious resident species.

Ecologists, researchers and amateur wildlife enthusiasts have overcome these sensory limitations by using thermal imaging and night vision optics. This article will cover how these different technologies function, highlight their key specifications and give recommendations for those looking to purchase one of these devices.

© Dûrzan cîrano

Thermal Imaging

Thermal imaging works by using an electronic detector element to convert the infrared light (heat) emitted by objects in the environment into a visible pattern of colours that vary depending on the temperature of the object. Thermal imaging devices (TIDs) are becoming increasingly common in ecological surveys because, unlike night vision devices, they can produce an image in daylight or complete darkness, even through fog.

When choosing a TID there are a few key technical specifications that you should consider for your project:

  • Resolution – The clarity of the images/videos is determined by the number of heat sampling points. The higher the resolution, the easier it is to spot small animals at a distance.
  • Refresh Rate – Determines how often the screen is updated with a new image. A refresh rate of 30Hz or more is recommended for fast-moving animals such as birds and bats.
  • Zoom – This is particularly useful for larger species identification and counting your target more accurately.
  • Field of View (FOV) – The horizontal and vertical angle of view that you can see through the thermal imaging device. A wider field of view is useful when detecting small animals.
  • Maximum Detection Range – Gives an indication of how far the device will be able to detect a human-sized object effectively.
Pulsar Axion XM38

This thermal monocular has a compact, ergonomic design and features all the excellent capabilities of Pulsar’s more advanced thermal imaging devices.

  • Refresh rate: 50Hz
  • Sensor resolution: 320 x 240p
  • Digital zoom: 2x, 4x
  • Field of view: 5.8° horizontal
  • Max Detection Range: 1700m
  • Video Recording: Yes
  • Streaming capabilities: Yes
  • Price: £2,059.99



See the full range of Pulsar Axion models

Pulsar Helion XP50

A powerful thermal imaging monocular with an impressive resolution and detection range, as well as full remote control through the Stream Vision app on a smartphone or tablet.

  • Refresh rate: 50Hz
  • Sensor resolution: 640 x 480p
  • Digital zoom: 2x, 4x, 8x
  • Field of view: 12.4°
  • Max Detection Range: 1800m
  • Video Recording: Yes
  • Streaming capabilities: Yes
  • Price: £3,949.99

See the full range of Pulsar Helion XP & XQ models

Seek Thermal CompactPRO FF

Designed to be used with a smartphone or tablet these compact thermal detectors can be easily transported and are excellent for impromptu use.

  • Refresh rate: 15Hz
  • Sensor resolution: 320 x 240p
  • Digital zoom: 2x
  • Field of view: 32°
  • Max Detection Range: 550m
  • Video Recording: Yes
  • Streaming capabilities: No
  • Price: £479.95

See the full range of Seek Compact models

Seek Shot

Designed to be used quickly and conveniently, these pocket-sized devices are excellent for obtaining thermal images of species such as bats when they are roosting in crevices and cavities. It is also available in a Pro version which has a greater sensor resolution and field of view.

  • Refresh rate: <9Hz
  • Sensor resolution: 206 x 156p
  • Field of view: 36° horizontal
  • Max Detection Range: 300m
  • Video Recording: Yes
  • Streaming capabilities: Yes
  • Price: £579.95

 

Night Vision

Night vision technology operates either by using an image-intensifier tube (analogue) or an electronic sensor (digital) to amplify the small amount of light present in dark environments to generate a bright image. They typically produce a monochromatic green or greyscale image, however some newer technologies are now able to capture colour images in low light conditions.

There are a few specifications that you should consider when choosing an night vision device (NVD):

  • Viewing Range – The distance to which you can see and distinguish objects using the device can be crucial for certain projects. A low-end NVD will typically have a viewing range of around 200m, while more high-end models can achieve viewing ranges of up to 500m.
  • Analogue Night Vision – These scopes are grouped into generations. Gen 1 scopes are the most economic but have a limited range (approximately 75m), lower resolution and limited field of view. Gen 2 and 2+ scopes offer performance improvements such as longer range, better image resolution and greater field of view.
  • Digital Night Vision – Digital devices typically produce higher quality images than Generation 1 scopes, often have a video output or SD card allowing video capture.
  • IR illumination – Most night vision devices have a built in IR illuminator to increase the brightness of the images it takes, however purchasing an additional IR illuminator may be necessary when working in extreme darkness.
SiOnyx Aurora

New for 2019, this innovative night vision monocular utilises SiOnyx’s Ultra Low-Light Sesnor Technology to record colour footage not only during the day but also in both low-light and night-time conditions. It also features a wifi module to stream or transfer photos and videos, as well as a GPS module to automatically geotag and timestamp recordings.

  • Digital: Ultra Low-Light CMOS sensor
  • Digital Zoom: 1-3x
  • Field of view: 42°
  • Display colour: Colour, phosphor green, monochrome
  • Video Recording: Yes
  • Streaming capabilities: Yes
  • Price: £799.99
Bushnell Equinox Z2

An impressive digital night vision monocular with a high sensor resolution and viewing range of up to 230m. It can take HD video recordings which can be streamed over Wifi using the dedicated Equinox Z2 App.

  • Digital: CMOS sensorDigital Zoom: 1-3x
  • Field of view: 105m @ 1000m
  • Display colour: Colour (in daylight), greyscale
  • Video Recording: Yes
  • Streaming capabilities: Yes
  • Price: £421.00



See the full range of Bushnell Equinox Z2 models

Yukon NVMT Spartan

An excellent gen 1 monocular that has been designed for ease of use in complete darkness. It is operated using only three buttons and features a lightweight and compact body-shell to protect against any damage.

  • Analogue: Generation 1
  • Lens diameter: 50mm
  • Magnification: 4x
  • Field of view: 15°
  • Display colour: Phosphor green
  • Video Recording: No
  • Streaming capabilities: No
  • Price: £235.00


MORE INFORMATION

To learn more about some of these products or to browse our full range of night vision and thermal imaging optics visit our online store at NHBS.com.

If you would like some more advice on choosing a thermal imaging or night vision device contact us via email at customer.services@nhbs.com or phone on 01803 865913.

New bird, bat and bee boxes for 2019

Providing nesting and roosting spaces for our wildlife is increasingly important as natural habitats and nest spaces are diminishing. Luckily, with the huge range available today, boxes for birds, bats and even bees can be sited almost anywhere from a tree in your garden, to within the walls of a new building and even free-standing. Below we will take a look at some of our newest bird, bat and bee boxes and what they can be used for.

introducing the Integrated Boxes by Green & Blue

The Bat Block

Green & Blue have just released two brand new products ready for this Spring.  Designed to be simple and easy to fit within the framework of new builds, the new Swift block and Bat block are sleek and made from recycled materials from the Cornish china clay industry. Both are standard UK block size and have slightly protruding entrances.

The Swift Block

Green & Blue BestSellers

As well as their new swift and bat boxes, Green & Blue also sell a range of blocks for bees. The blocks are made of 75% waste materials from the Cornish china clay industry and features small holes that appeal to a range of solitary bee species. The blocks range from small, brick-shaped blocks that can be built into walls or buildings, to large, stylish posts reaching 2.3m high, to plant pots that have space for you to plant bee-friendly flowers next to the solitary bee nesting holes.

New additions to the Eco Range

The ‘Eco’ range of boxes has recently expanded to feature a new Eco Bat Shelter and an Eco Tawny Owl Nest Box. These boxes are made of recycled plastic and the bat shelter comes in both a standard black and a brick-red colour. The bat shelter features a ceramic insert that helps to stabilize the internal temperature and is self-cleaning. The tawny owl nest box contains an FSC certified wooden nesting chamber which features built-in drainage holes meaning maintenance can be kept to a minimum. 

Aside from the new bat shelter and Tawny Owl nest box, the Eco range also includes a variety of boxes to cater for a wide range of bat and bird species. All of which are made from 100% recycled plastic and FSC certified wood and wood composite internal chambers. Click the images below to find out more.

Eco Range Bestsellers

Eco Barn Owl Nest Box

Eco Kent Bat Box

Eco Robin Nest Box

Eco Sparrow Tower

Integrated Habibat 003 Blended Box

The Habibat 003 is based upon the original Habibat box but features a blended facing to allow it to fit more seamlessly in building where the brickwork is built using stretcher/blended bond. The box provides the same internal roost space with insulating concrete and comes in a choice of three popular colours: smooth blue, smooth red or buff. If you have a more specific brick requirement or would like the box to match exactly your batch of bricks, the 003 is available with a custom facing where you can send your own bricks to be used or provide your brick code for the manufacturers to use on your box.

more information

If you would like some more advice on choosing bird or bat boxes, take a look at our previous blogs listed below or contact us via email at customer.services@nhbs.com or phone on 01803 865913.

Best Bird Boxes for Different Species 

Top 10 Bat Boxes for New Builds and Developments

Top 10 Bird Boxes for New Builds and Developments   

Top 10 Bat Boxes for Walls and Fences

Top 10 Bird Boxes for Walls and Fences

Top 10 Bat Boxes for Trees and Woodland  

Top 10 Bird Boxes for Trees and Woodland

The Importance of Nest Sites for Birds and Bees

Continue reading “New bird, bat and bee boxes for 2019”

New and Bestselling Trail Cameras for 2019

As we enter the warmer spring months many of the UK’s mammals become more active as they establish territories, build nests and find mates. Despite all this activity, observing and surveying these animals is often a challenging task. Trail cameras offer an easy, effective and non-invasive solution in many of these situations, earning its place as an essential kit piece for any ecologist or wildlife enthusiast.

Listed below are a selection of new models and old favorites from each of our trail camera ranges.

Browning trail cameras

New for 2019, NHBS has introduced a range of Browning trail cameras. These cameras boast a fantastic quality of workmanship, designed and developed in the US they are sure to become a firm favourite. A key feature of this brand is the ‘Smart IR technology’ which automatically adjusts the IR flash, ensuring crisp quality night photos.

The video below was captured on a Browning Strike Force Pro X. It demonstrates the fantastic quality of these cameras.

Image by Browning Trail Cameras

Each camera has its own unique technical specifications meaning you can find a camera to suit your project.

Command Ops Pro 14MP
An excellent entry-level camera with an impressive picture and audio quality at an economic price.

Command Ops Pro 14MP

 

* 14MP images
* 1280 x 720p HD videos with audio
* Low glow LEDs
* LCD Text display
* 21m Flash range
* Also available as a 16MP camera

 

 

Strike Force Pro X
This compact mid-range camera has a fast trigger speed and an excellent picture/video quality ensuring you capture every moment in fantastic quality.

Strike Force Pro X

 

* 20MP images
* 1600 x 900p HD videos with audio
* Low glow LEDs
* Full-colour 1.5-inch LCD screen
* 36m Flash range
* Fast trigger speed of 0.22s

 

 

Defender 940
A high-end camera with built-in Bluetooth and wireless capability and no glow LEDs to enable remote photo retrieval and minimise disturbance in the field.

Defender 940

*20 MP images
* 1920 x 1080p HD videos with audio
* No glow LEDs
* LCD Text display
* 24m Flash range
* Wireless and Bluetooth functionality accessed through the free Browning Defender App.

 


Recon Force 4K
This high-end model can take some of the highest quality pictures and videos on the market.

Recon Force 4K

 

* 32MP images
* 4K UHD videos with audio
* Low glow LEDs
* Full-colour 2-inch LCD screen
* 24m Flash range
* Adjustable trigger speed and detection range

 

Ltl Acorn Cameras

These compact cameras utilise three different motion sensors to ensure footage is taken at the optimum moment. They also feature a cellular module which when used with a SIM card allows you to receive captured images to a mobile or email address.

Ltl Acorn 5310
A great mid-range camera with excellent picture and video quality

Ltl Acorn 5310

 

* 12MP images
* 1920 x 1080p HD videos with audio
* No glow LEDs
* 15m Flash range
* Trigger speed 0.6s
* Colour LCD screen

SpyPoint Cameras

Renowned for their lightning fast trigger speeds and recovery speeds, SpyPoint cameras ensure you never miss a wildlife moment.

SpyPoint Force 11D
A robust and compact mid-range camera with a wealth of adjustable settings so you can take the best footage possible.

SpyPoint Force 11D

 

* 11MP images
* 1280 x 720p HD videos with audio
* Low glow LEDs
* Full colour 2-inch LCD screen
* 30m Flash range
* Fast trigger speed of 0.07s

 

 

SpyPoint Solar
Builds on the Force 11D by adding a solar panel which allows you to gather footage indefinitely when placed in sufficient sunlight.

SpyPoint Solar

 

* 12MP images
* 1280 x 720p HD videos with audio
* Low glow LEDs
* Full-colour 2-inch LCD screen
* 30m Flash range
* Fast trigger speed of 0.07s
* Compact solar panel attached to the top of the unit

 


SpyPoint Link-Dark
This high-end camera builds on the Force series by adding network functionality, allowing photos to be transmitted to a mobile phone.

SpyPoint Link-Dark

 

* 12MP images
* 1280 x 720p HD videos with audio
* Low glow LEDs
* Full-colour 2-inch LCD screen
* 30m Flash range
* Fast trigger speed of 0.07s
* GPS geotag
* Network unit with preactivated SIM

Bushnell Cameras

With an extensive history and a range of professional and entry-level models available, Bushnell trail cameras offer a reliable choice for quality and durability.

Trophy Cam Essential E3
A fantastic entry-camera with an impressive trigger speed.

Trophy Cam Aggressor HD Low Glow 20MP Tan
Trophy Cam Essential E3

 

* 16MP images
* 1280 x 720p HD videos with audio
* Low glow LEDs
* LCD Text display
* 30m Flash range
* Fast trigger speed of 0.3s

 

 

Trophy Cam Aggressor HD No-Glow
A high-end camera with a fast trigger speed and low detectability.

Trophy Cam Aggressor HD No-Glow

 

* 20/24MP images
* 1920 x 1080p HD videos with audio
* No glow LEDs
* Full colour LCD screen
* 25m Flash range
* Fast trigger speed of 0.2s

Reconyx Trail Cameras

These high-end trail cameras are a benchmark of high-quality and reliability.

Reconyx UltraFire XR6 Trail Camera
A robust camera with excellent video quality and a number of impressive features.

Reconyx UltraFire XR6 Trail Camera

 

* 8MP images
* 1920 x 1080p HD videos with stereo audio
* No glow LEDs
* Full colour LCD screen
* 25m Flash range
* Compatible with Buckview Advanced Software, to organise and map stored images.

 

Accessories

A number of accessories can be bought to help mount and secure your trail camera your camera in the perfect position.

Python Mini Cable Lock

Python Mini Cable Lock
Compatible with all of our retailed trail cameras. This versatile lock has been designed to be extremely resilient to damage and picking, protecting your camera from any potential theft.

Security Boxes
Many of our trail cameras can be contained within a matching security box which provides maximum protection when in the field. All of our security boxes can be locked using a standard padlock or python cable. Make sure when purchasing a security box that it will fit the intended trail camera.

See our full range of Security Boxes on our website.

Batteries
The batteries you use in your trail camera can influence its performance in the field. Lithium-ion batteries are one of the most popular choices because they produce a high voltage per cell (1.6v) giving a brighter LED flash and a greater flash range. Rechargeable alkaline batteries offer a more economical and environmentally friendly alternative, however, when in use their voltage decreases over time and they produce proportionately darker LED flashes and consequently, photographs/videos are less illuminated. Standard alkaline batteries are also a suitable economic alternative.

SanDisk Class Cards
Ensuring you use a high read-write speed SanDisk Class card is highly advised for all of our trail cameras. Be sure to check the maximum SD or SDXC card capacity for your intended camera as these can vary between models and brands.

Solar panels
Where sufficient sun is available, the addition of a solar panel to your trail camera can extend its recording life indefinitely. Bushnell, SpyPoint and Ltl Acorn all offer compatible solar panels for their trail cameras.

All of our trail cameras can be purchased as starter bundles which include an SD card and all the batteries you need to power the camera. The complete trail camera range can be found at www.nhbs.com

Can’t decide which camera you need? Why not take a look at our guide on choosing the camera that’s right for you.

Continue reading “New and Bestselling Trail Cameras for 2019”

NHBS Guide to Bat Survey Equipment

Common Pipistrelle by Meneer Zjeroen on Flickr

With Spring around the corner and the bat survey season fast approaching, it is a great time to make sure you have everything ready for the busy months ahead. Over the winter we have been busy reviewing our current products, cataloging new products and even designing our own products. Here, we have picked out some exciting new products as well as some old favourites to take a look at.

The NHBS Harp Trap – Coming Soon!

Over the last few months, the NHBS manufacturing team have been working hard on developing the NHBS Harp Trap. We are currently in the process of testing and trialing our harp trap ready for its release in the coming months. Designed and built on-site at our workshop in Totnes, our three-bank harp trap will feature some innovative designs such as a winding line carrier and anti-tangling system that makes assembly and disassembly, easy and efficient. Made mostly from aluminium, the trap is surprisingly lightweight at just 15kg, whilst remaining sturdy and durable during use. The harp trap is 190cm long and has a catch area of about 4m². The catch bag is approximately 60cm deep and its entrance is about 39cm wide. When collapsed, the catch bag wraps around the disassembled frame and is held tightly with Velcro straps so that it can be neatly stored and carried in its bag. Initial feedback on its design and function has been very positive and we are excited to develop our design based upon suggestions from professional bat workers. Our standard trap will be a three bank, but if you would like a bespoke two or four bank trap, please contact us so that we can discuss your requirements.

BTHK Tree-Roost Net

Based on the design by Henry Andrews from the Bat Tree Habitat Key (BTHK) project, the BTHK Tree-Roost net is uniquely designed for trapping bats as they emerge from tree roost sites. The net is set up against a roost site prior to dusk so that it will catch any bats that emerge, keeping them safely in the bag ready for identification, measuring and ringing. The diamond shape of the net head can pivot and collapse inwards to ensure that the net fits flush against any tree, making it safer for bats and easier for surveyors. The net bag is made from fine woven nylon mesh that is soft and will not damage the delicate wings or feet of bats. The net bag can be easily removed for cleaning and features a clear plastic rim that fits around the collar and prevents bats from climbing up and out of the net when it is in place. The length of the handle is 4 meters (breaks down into 3 sections for ease of transport) and the depth of the bag is 1 metre. You may also be interested in the book Bat Roosts in Trees which is a guide to finding tree roosts.

Anabat Scout – Coming Soon!

The Anabat Scout is the latest bat detector by Titley Scientific. Due for release this March, the Scout is designed with UK and European bat biologists in mind and is tailored for active bat surveying. It can record both full spectrum and zero crossing files and stores them on a SD card with every file geo-tagged. The Scout has heterodyne, auto-heterodyne and frequency division audio that can be played through earphones or its own built-in speaker. The in/out bat counter is ideal for emergence surveys and will automatically timestamp and geo-tag every count. The small OLED screen displays crucial information without being too bright or distracting and the Anabat Scout will be compatible with Anabat’s free Anabat Insight software for viewing and analysing your data. Easy to use and versatile, this new detector is set to become popular with bat ecologists who are looking for an active survey detector.

Elekon Batlogger M

The Elekon Batlogger M is great for active surveying and full spectrum recording. The weatherproof FG Knowles microphone has a range of 10–150kHz and can record in 16-bit full spectrum. The Batlogger M also logs the GPS coordinates (via an integrated GPS receiver), and environmental temperature at the time of recording. Different recording settings (scheduled, permanent, or triggered), and different trigger thresholds (for call identification) can be set up and the device comes with its own powerful but user-friendly call analysis software package

Echo Meter Touch 2 Pro

The Echo Meter Touch 2 lets you record, listen to, and identify bat calls in real-time on your iOS or Android device. All you need is your Android or Apple device (see the nhbs.com website for compatible models), your Echo Meter Touch 2 Pro, and the Echo Meter Touch App which is a free download from the iTunes Store or Google Play Store. When plugged in, the Echo Meter Touch 2 enables you to listen to bats in real time, view live sonograms in full colour, record onto your device and identify calls to species level in seconds. If your device has GPS functionality, the Echo Meter Touch will also log the recording location and path of the recording session. There are two versions available in both an iOS version and Android version. Both versions allow you to listen to calls in real time expansion and heterodyne and you can playback in real time expansion, heterodyne or time expansion modes. The trigger sensitivity and sample rate are adjustable and three gain settings allowing users to optimise their detector to their target bat species and ambient conditions.

SM4BAT FS

The SM4BAT FS is a full spectrum detector for passive surveying use. Robust and weatherproof, it will record 16-bit full spectrum calls and can store up to 512GB of data. A versatile scheduling function allows you to set when you want to record and the battery can last up to 450 hours. The SM4BAT FS is easy to fit to a tree or post and is compatible with a variety of accessories such as GPS unit and microphone extension cables. The SMM-U2 ultrasonic microphone is available with the SM4BAT FS and is a highly sensitive microphone that produces high quality, low noise bat recordings over long distances. Easy to set up and producing detailed call recordings for analysis, the SM4BAT FS is ideal for unattended use in the field.

Anabat Swift

The Anabat Swift from Titley Scientific is based on the excellent design of the Anabat Express, but has the advantage of recording in full-spectrum, as well as zero crossing. Users can choose between sample rates of 320 or 500kHz and data is saved onto an SD card. Two SD card slots are available, allowing you to save more bat calls without changing cards. The Swift also has a built-in GPS receiver that automatically sets the clock, calculates sunset and sunrise times and records the location of the device. It will also record automatically from sunrise to sunset every night (based on GPS coordinates) as one of the automatic recording settings.

BatLure

The BatLure can be used as a lure to improve catch rates of bats for survey or research, to attract bats to new artificial roosts such as bat boxes or constructed hibernacula, with bat detectors at training events or prior to bat walks and for calibration of bat detectors. The Batlure can playback sounds with frequencies of up to 100kHz and is capable of playing both real time and time expanded recordings of bat vocalisations. It is very compact and robust and has a tripod attachment mount, making it easy to set-up in your desired location. It plays sounds from an SD card which is supplied complete with several pre-loaded recordings. Users can also add their own recordings onto the card.

Ecotone Ultra Thin Series M mist net for bats

The Ecotone Ultra Thin Series M is ideal for catching bats and is available in 2 mesh sizes. Both are made from nylon (0.8mm monofilament) and have 4 shelves. Available in lengths from 3m to 21m, you can pick the mesh size and length that best suits your survey and situation.

 

Explorer Premium Digital Endoscope Camera

The Explorer Premium Digital Endoscope is lightweight and easy to operate. It can record still images or video on to a microSD / microSDHC card (not included). The screen can be detached whilst the camera is in operation and viewed up to 10m away. The camera head has a diameter of 9mm and the cable is 91cm long, giving easy access to nest boxes, burrows, nests, crevices etc. Lighting levels can be adjusted to minimise disturbance to animals.

Accessories

Below are some accessories that may come in use when surveying bats:

Petzl Actik Headtorch
£39.95

Stainless Steel Hand-Held Counter
£7.50

Animal Handling Gloves
£5.69 5.99

dialMax Vernier Dial Caliper
£29.99

ETI Hygro-Thermo Pocket Sized Hygrometer
£21.95 26.99

Small Mammal Holding Bag
£3.60

Telescopic Inspection Mirror
£14.99 16.99

High Flier Mist Net Support System (for Bats)
 from £695.00

Further Reading

Below are some books that may come in use when surveying bats:

Bat Roosts in Trees£39.99
British Bat Calls £18.99
Bat Surveys for Professional Ecologists£29.99
The Bat Worker’s Manual£17.99

A note on licensing

Please note that in the UK, all bats and their resting or breeding places are protected by law. Any bat survey work must be undertaken by a licensed bat ecologist and when purchasing certain products, we ask you to confirm your lisence or give an appropriate reference. For more information, please visit https://www.gov.uk/government/collections/bat-licences.

NHBS Guide to newt survey equipment

 

Great Crested Newt. Image  by Lottie

Great Crested Newts are the UK’s most strictly protected amphibian, requiring licensed ecological surveys if a development may affect them. As the first signs of spring emerge, ecologists are preparing for the start of this year’s newt survey season. Below, we have compiled a list of the most common newt survey methods and the equipment needed for each, so that you can ensure you have everything you need as the survey season approaches.

Netting

Netting for adult and larval newts can be a useful tool in both survey and relocation. Here at NHBS, we have designed an amphibian net specifically for the safe and efficient capture of newts. The net bag is attached by a wide velcro collar which prevents newts from becoming caught between the frame and the bag. The bag can also be removed from the frame to be disinfected between sites. The seams have been carefully placed so that they do not come into contact with the front edge of the net, and the material of the bag is a soft 2mm mesh. The net head is 300mm wide and comes with a sturdy, wooden 1.2m handle. We also sell a diamond-shaped amphibian net that comes in either standard depth or deep. Its shape is ideal for easy and safe capture for amphibians and is also available in a collapsible frame for easy transport between sites.

eDNA

The presence of Great Crested Newts can be determined by analysing pond water samples for newt DNA. This process is known as eDNA sampling and is a recent but very effective way of newt surveying that causes very little disturbance to the newts themselves. Provided that the sampling and analysis protocol complies with DEFRA guidance and that samples are collected between 15th April and 30th June, then eDNA test results are accepted by Natural England and Natural Resources Wales. This year, NHBS has once again teamed up with eDNA laboratory, Nature Metrics to deliver a complete Great Crested Newt eDNA analysis service. Combining our expertise in sourcing, packing and shipping equipment with the excellent laboratory proficiency of Nature Metrics, this partnership facilitates a fast and efficient service. If you would like to find out more about the eDNA services that Nature Metrics provide, please visit www.naturemetrics.co.uk

Dewsbury Trapping

The Dewsbury trap is an innovative design of newt refuge trap that is exclusive to NHBS. The clever design of this trap ensures that any trapped newts have access to both fresh air at the top of the trap and a thermally stable refuge at the bottom of the pond. They can be easily deployed from the edge of the pond meaning that not only is this trap safer for newts, but it is also safer and more convenient for surveyors too. In preliminary trials the Dewsbury trap was found to be more effective at catching newts than traditional bottle trapping methods and can be left unattended for up to 24 hours meaning night visits are not necessarily required.

Please note: we recommend that you contact your national licensing authority (Natural England, Natural Resources Wales, Scottish Natural Heritage, etc) before you purchase this trap. The Dewsbury Newt Trap is not included within either the Level 1 or Level 2 Natural England Class Survey Licence and a separate licence is required

Bottle Trapping

Bottle trapping is a popular method of surveying for both detecting and assessing populations. It can, however, become quite labour intensive, especially if you are looking to cut bottles into traps yourself. To save yourself some valuable time, we sell pre-cut bottle traps with the head inverted and ready to deploy. These can be bought in packs of 40 or 120 and are cut from 2l PET bottles with a 28mm neck diameter. Alternatively, we sell the whole bottles if you would rather cut the traps yourself.

Torching

Torching is a less invasive and effective method of counting/observing newts without the need for capturing them. Torches are recommended to be between 500,000 and one million candlepower and need to ideally last several hours at a time. The Cluson CB2 range is very popular among ecologists and provides 1 million candlepower with long lasting battery life and an easy-to-use pistol type grip. For a more lightweight and economical option, the LED Lenser is a powerful torch that offers up to 450 lumens and a sharply focused circular beam that can last up to 300 hours on a low power setting.

 

Drift Fencing

Fencing can either be used to temporarily exclude or contain newts in mitigation projects. It can also be used to aid the capture of newts for relocation and is typically a short barrier with the base buried underground. Our Tristar Newt Fencing comes in rolls of 100m, is made of UV stabilised polythene sheeting and tinted green. It is designed to resist weather damage and has a life expectancy of 5 years, making it ideal for temporary mitigation projects during development works. It is easy and simple to put up and can be fixed into place with our soft wood stakes.

Pitfall Traps

Often, pitfall traps are used alongside drift fencing in order to trap and translocate newts in relocation projects. They consist of a container that is buried underground often flush with the edge of drift fencing. Both square buckets and round buckets have been shown to be effective and we supply several options depending on your preferences.

Accessories

Below are some accessories that may come in use when surveying Great Crested Newts: 

 

Light & Dry Micro First Aid Kit
£15.95 16.99

Bamboo Canes
From £13.00 for 100

dialMax Vernier Dial Caliper
£29.99 45.00

Snowbee Granite PVC Thigh Waders
£40 (various sizes)

Snowbee Lightweight Neoprene Gloves
£12.95 (various sizes)

Replacement Amphibian Net Bag
£26.99

Broad Spectrum Disinfectant Tablets
£19.99

Breaksafe Thermometer
£7.50

A note on licensing

Please note that Great Crested Newts and its habitat are protected by law. Any Great Crested Newt survey work must be undertaken by a licensed ecologist. Different levels of license are required for different survey and mitigation methods. For more information, please visit https://www.gov.uk/government/collections/great-crested-newt-licences#great-crested-newt-survey-and-research-licences

NHBS Guide to small mammal survey equipment

Small mammals are common and widespread across many of our terrestrial ecosystems. They play a crucial role in ecosystem food-webs as key prey species for many carnivores and are also useful as indicator species for agricultural change and development. Consequently, surveys of small mammal populations can be a useful tool for ecologists, researchers, and conservationists alike.

Small mammals are most commonly monitored through the use of live traps. These allow a range of species to be monitored simultaneously and also allow biometric data such as weight and sex to be collected. In addition, estimates of population size and structure can be calculated using capture-mark-recapture (CMR) techniques. However, other more passive monitoring techniques such as dormouse nest tubes, hair tube, and footprint tunnels are also available. Below we will take a look at some of the most popular small mammal survey equipment.

Longworth Traps

Longworth traps have been widely used in the UK for many years. They are made from lightweight yet durable aluminium and have been consistently well documented in scientific literature and ecological reports.

The trap consists of two parts: a tunnel which contains the door tripping mechanism, and a nest box, which is attached to the back of the tunnel. The nest box provides a large space for food and bedding material to ensure that the trapped animal is comfortable until release. The sensitivity of the trigger mechanism can be adjusted depending on the target species, although Pygmy shrews have been known to be too light to trigger the mechanism. The door can be locked open for pre-baiting for ease of use.

The Longworth trap comes as two options: with a shrew hole or without a shrew hole (Please note that shrews are a protected species so ensure you are aware of the relevant laws in the country in which you are trapping).

Sherman Traps

Sherman Trap

Sherman traps are another popular live-trap which can be folded flat for ease of transport and storage. They work by a trigger platform which causes the entrance door to shut when an animal runs into the trap. Sherman traps are formed of one compartment and because of this, it can be difficult to add food/bedding into the trap without interfering with the trigger platform. The traps may also distort over time with repeated folding. Sherman traps come in a variety of sizes and lengths so that you can find a trap to best suit your target species and can be purchased as either an aluminium or galvanised version which is more resistant to rusting.

NHBS Water Vole Trap

If you are looking to trap and survey water voles, we offer a water vole trap which comprises an extra large (XLK) Sherman trap with its rear door removed and an attached nesting compartment. This trap is suitable for water vole survey, such as capture, mark, recapture studies, as well as water vole relocation projects.

 

Footprint Tunnel

Footprint tunnels are a less invasive method of surveying small mammals. Species presence/absence can be determined by examining the footprints made by mammals that have walked over an ink pad to reach the bait left in the tunnel. This method is especially useful for determining the presence of hedgehogs that are not otherwise easily ‘trapped’. The tunnel comes with a UK mammal footprint identification sheet; however it may be difficult to distinguish between some species of smaller mammals.

Squirrel Hair Traps

Squirrel hair traps are another non-invasive survey method that is designed for red squirrel survey. When squirrels pass through the baited trap, their hair is collected on sticky tabs within the tube. These hairs can then be analysed to determine whether red squirrels are present in the area.

 

Dormouse Tubes

Dormouse nest tubes are a cheap, easy and very popular method of determining the presence of dormice within a habitat. The tubes consist of a wooden tray and a nesting tube. Dormice make nests in the tubes and it is these that are used as indicators of their presence in the habitat. Dormice are legally protected in the UK and must not be handled unless you have a licence to do so. Nest tubes can be set up and checked without a licence until the first evidence of dormouse activity is found. After that, only a licensed handler can check them.

Accessories, guides and books

Below are some accessories, guides and books that are commonly used for mammal survey and monitoring:

 

Small Mammal Holding Bag
£2.50

Pesola Light-Line Spring Scales
From £35.00

Pesola PTS3000 Electronic Scale
£126.00

Heavy Duty Extra-Large Polythene Sample Bags
£0.70 per bag

Animal Handling Gloves
£5.69 5.99

Marking Flags
£2.50 for 10

Britain’s Mammals
£13.99 17.99

The Analysis of Owl Pellets
£4.99

Britain’s Mammals 2018
£17.99

A Guide to British Mammal Tracks and Signs
£4.50

A note on licensing

Please note that some small mammal species are protected by law (e.g. shrews and dormice in the UK) and you must obtain a license from Natural England, Scottish Natural Heritage or the Natural Resources Wales if you set traps with the intention of trapping any species of shrew. Please ensure you are aware of and meet the requirements of any relevant laws in the country in which you are trapping. Please visit https://www.gov.uk/government/publications/survey-or-research-licence-for-protected-species for more information.

Introducing new microplastics nets from NHBS

The destruction of aquatic ecosystems is a major issue facing conservationists globally – causes include microplastic pollution, acidification, global warming and over-fishing. The manufacturing team at NHBS have produced a series of new survey nets designed to help researchers gather data on microplastics and to sample plankton more efficiently. This blog describes the sea trials performed using our prototype nets to establish the optimal towing speeds and sea conditions as well as whether the nets worked effectively and were robust enough to withstand exposure to the marine environment.
Three new nets were tested – the Manta Trawl Net, which is designed to sample microplastics in calmer inshore waters and on rivers and lakes. The Avani Trawl Net, which is designed to sample microplastics in rougher, offshore environments and the Bongo Net (a pair of 300mm plankton nets joined in the middle and weighted with a depressor vane) which is designed to allow researchers to use two different mesh nets during a single trawl. Plymouth Sound was an ideal location, as we had both inshore and offshore designs to test and the breakwater provided us with easy access to both sheltered water and the open ocean.

The first design tested was the Bongo Net. The net performed very well. The sampling depth was easily adjusted by modulating the speed of the boat and the depressor vane kept the net level in the water.  In our tests the Bongo Net performed best at towing speeds of between two and four knots.

Bongo Net

Next, we tested our inshore Manta Trawl Net. The Manta Trawl Net is designed for microplastics sampling in calm inshore waters and on rivers and lakes. The Manta Trawl Net has a post box shaped aperture and twin ‘wings’ (manta wings) mounted onto the frame which serve to lift the net frame so that samples are efficiently collected at the top of the water column. This net was tested at a variety of towing speeds and performed best at speeds of between two and four knots.

Manta Trawl Net

The last net to be tested was The Avani Trawl Net. The Avani Trawl Net is designed for offshore microplastics sampling. The vertical orientation of the aperture of the net ensures that samples are collected from the top few centimetres of the water’s surface in slight to moderate swell conditions. To test this net, we ventured out beyond the breakwater where the swell was approximately 1-2m. The net stood upright and performed as expected at speeds of between four and eight knots when exposed to smaller waves of approximately one metre in height. When approaching larger waves, we found that the net had a slight tendency to cut into the side of the wave at speeds of between six and eight knots and that the net performed best at slightly lower speeds.

Avani Trawl Net

All of the nets functioned properly, and our haul included both microplastics and icthyoplankton (fish eggs and larvae). Both the frames and the nets also withstood the sea conditions well and we could find no faults with their design or build – all told a successful trial.
If you are interested in these nets look out for them in our 2019 catalogue, find them on nhbs.com, or contact us on customer.services@nhbs.com and we will send you more information as soon as it becomes available.