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.

Dormouse Footprint Tunnel

Dormouse Footprint Tunnels offers a very low disturbance method of detecting dormouse presence in a habitat. Dormice passing through the tunnel have to cross over inked pads which cause them to leave characteristic footprints on the card or paper inserts. The Suffolk Wildlife Trust and CIEEM have suggested that footprint tunnels may be a more effective survey tool within scrub and hedgerow habitats than dormouse tubes, and equally as effective in high canopy woodland.

Accessories

Listed below are some of the essential accessories which are required for surveying small mammals:

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

Field Guides and Books

There are many excellent field guides and books available which can greatly assist with reliably identifying and surveying small mammals in the UK.

Live Trapping of Small Mammals
Paperback| Jul 2019| £7.99
Published by  The Mammal Society, this compact guide is the essential text for anybody looking to survey small mammals in the UK. It contains detailed practical instructions on survey methodology, complemented by colour photographs and illustrations.

Britain’s Mammals
Paperback| Apr 2017| £17.99
The perfect companion for anyone interested in watching mammals. This field guide combines concise descriptions of species life-history and distribution along with detailed colour photographs to help you reliably identify the mammals of Britain and Ireland.

The Analysis of Owl Pellets
Paperback| Apr 2009| £4.99
This handy booklet provides information on how to identify and analyse the undigested small mammal remains found in owl pellets.

 

Britain’s Mammals 2018
Paperback| Jun 2018| £17.99
This review uses more than 1.5 million biological records to provide the best available assessment of population size, geographical range, temporal trends, and future prospects of the 58 British terrestrial mammal species.

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.

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.

Author interview: Peter Marren

Written with Peter Marren’s usual wit and insight, Emperors, Admirals & Chimney Sweepers takes you on a journey back to a time before the arts and science were divided. When entomologists were also poets and painters, and when a gift for vivid language went hand-in-hand with a deep pre-Darwinian fascination for the emerging natural world.

Peter took the time to answer some of our questions about his new book and the origin of butterfly and moth names.

Tell us a little about your background and how you got interested in the etymology of species names?

I’m a natural history writer (in the sense that I’ve written a lot about natural history) with a background in nature conservation in Britain. I’ve loved butterflies and moths since boyhood, and I suppose I must have realised even then that many of them have unusual names. What the hell was an eggar? Or a lutestring? Probably like most people I didn’t think too much about it – weren’t names just labels? – until, out of curiosity, I went into the name of the Red Admiral, Vanessa atalanta, and discovered a real Vanessa and a real Atalanta. And then I realised that even Latin names weren’t randomly chosen but had a particular resonance with that particular species. Names hid a whole new world of allusion, poetry and wordplay. I discovered that those who named our Lepidoptera, in English and Latin, were equally educated in the arts and the sciences. They knew their myths, and they knew about colours and designs, and they were completely fascinated. I feel a strange empathy with that vanished world.

What was the original inspiration behind Emperors, Admirals & Chimney Sweepers?

It started as a kind of sequel to my book Rainbow Dust, about how and why butterflies and moths inspire people. Names were confined to a single chapter in that book, but there was so much more to say, not only about the names themselves but the social ambience that spawned them: the world of Georgian London with its clubs and field excursions, its gorgeous illustrated books and the sense that nature was all the more wonderful for being 1) divinely inspired and 2) almost completely unknown.

The lightbulb moment came when I thought of dealing with names not as an entomologist might do, by families and related groups, but by themes: species named after animals, birds, moods, occupations, jewels and so on, all laid out alphabetically. I loved the fact that certain fine moths were named after weddings, focussing on bridal underwear worn in eighteenth century Sweden!

Emperor, Admiral and Chimney Sweeper are, of course, names of a butterfly and two moths.

If you could name a new species of moth or butterfly, how would you go about it?

Well, it ain’t a blank slate. There are written rules for scientific names and unwritten ones for common names. I’d love to call it Marren’s Glory but it would not be approved. I’d have to stick with the established vocabulary. So if it resembled, say, a wainscot moth, it would continue to be called that, distinguished by whatever word best caught its character. Overlooked Wainscot? Lenitive Wainscot? Look-alike Wainscot?  

What would be your advice for any budding entomologist out there?

There’s more to the natural world than pure science. Keep your eyes, and your mind, open. And enjoy yourself. And don’t say, “Oh that’s a Lenitive Wainscot, a Schedule 7 species graded as Least Concern in the latest IUCN Red List.” Just the name will do.

What is your most memorable butterfly or moth name, and why?

There are lots, but let’s go with the poor little Narrow-bordered Bee Hawk-moth, whose Latin name, tityus, commemorates the most hideous giant in all mythology. The giant’s poor mum exploded at his birth and when full grown his body covered nine acres. What do they have in common? Well, the old name for hawk-moths was Sphinx, and the Sphinx was a monster. Ergo (Linnaeus thought), hawk-moths should be given monstrous names. And the bee hawk accidentally got the worst of them because of its place on the list, wedged between two other appalling creatures.

I quite like Zygaena, the name of the burnet moths which they share with the hammerhead shark. For reasons too convoluted to go into here (but it’s in the book).

Any new books/projects in the pipeline?

I will have to find another project for it’s in the DNA. I suspect it will involve nature and childhood. Trouble is, others are on to it.

Other works by Peter Marren

Peter writes frequently in as ‘Twitcher’ in the British Wildlife column ‘Twitcher in the Swamp’ and has had a string of successful publications including Chasing the Ghost (now in paperback), Rainbow Dust and the first volume in the British Wildlife Collection series. Click here for more books by Peter Marren.

The NHBS Guide to Kick Sampling

Freshwater invertebrates Credit: Katharine Clayton

The presence or absence of freshwater invertebrates such as caddisfly (Trichoptera) and mayfly (Ephemeroptera) larvae, dragonfly and damselfly nymphs (Odonata) and planaria (Tricladida) can be used to provide an indicator of the health status of waterways.

Kick sampling

Kick sampling is a useful method for collecting these and other invertebrates from shallow waters and one of the key techniques used in monitoring freshwater invertebrates in rivers. The technique involves agitating the stones or sediment of a river or stream by foot and catching the sample in a sturdy hand net that is held downstream. Stones and logs can also be washed off carefully into the net and samples are usually taken both from faster flowing riffles and still areas of the river. The sample is then rinsed out of the net into a tray full of water for sorting and identification. Kick sampling is primarily a qualitative technique, to look at species diversity or presence/absence, but quantitative measures can be taken if a quadrat or transect is used on the floor of the water body to limit the sampling area and sampling time is controlled.

Scientist sorting biological net samples at a wetland

NHBS manufactures a range of hand nets that are the industry standard for kick sampling and are widely used by environment agencies and ecological professionals. Our Professional Hand Nets conform to the Environment Agency standards and we are the official Riverfly Partnership supplier. The Riverfly Partnership is a network of organisations bringing together anglers, conservationists, entomologists and relevant water authorities whose aim is to protect and monitor the water quality of our rivers.

The NHBS net range also includes smaller nets designed for students of all ages and a wide range of accessories and books to help with sample sorting and identification. Our hand nets are manufactured with a diverse range of net bags and handles to meet a wide variety of surveying purposes. We can also design and manufacture bespoke net designs in our workshop in Devon, so please do get in touch if you have special requirements.

Professional Hand Nets

The NHBS Professional Hand Net has been used for over 30 years in Environment Agency monitoring and was purpose designed to be lightweight, strong and long-lasting, with individual nets often still being used after ten years. Key features of the Professional Hand Nets include:

  1. The net bag is protected by the outer frame to minimise abrasion when kick sampling on stony surfaces.
  2. A range of mesh sizes are available, making it the ideal net for aquatic surveying of all macro- and microinvertebrates in shallow water. The bag mesh is either made from 1mm or 2mm woven polyester or precision welded nylon mesh (53µm to 500µm) and manufactured to international standards so that the mesh will stay the same shape and size, even under stress.
  3. The inner brass frame securely holds the bag away from the stony substrate and also allows the bag to be removed for sterilisation between sites.
  4. The comfortable handle is available in either a lightweight FSC wooden or aluminium version and both will float in water.  Two-part and three-part sectional wooden handles are also available, which can be unscrewed for transport or extended with extra sections.

Student Hand Nets

The Professional Hand Net is also available in a smaller Student version that is 200mm in width. This is designed to the same high quality as the larger Professional net but is ideal for educational use. The Student Hand Net is available with either a FSC wooden or aluminium handle and with net bag mesh sizes ranging from 250µm to 2mm, in standard 280mm or 380mm depth. We can design and manufacture bespoke nets so please do contact us with any requirements.

Lightweight Eco-Nets

The Lightweight Eco-Net has a strong aluminium frame that will withstand regular use both for kick sampling and pond dipping. Net heads are 160mm in width and 1mm and 2mm mesh bags are available to fit this frame. Bags attach to the head using industrial hook and loop strapping, making them easy to remove for replacement or sterilisation.

Riverfly Partnership Approved Kit

The Anglers’ Riverfly Monitoring Initiative (ARMI) is coordinated by the Riverfly Partnership and involves anglers and conservation volunteers from more than 100 partner organisations carrying out regular freshwater invertebrate surveys to check for severe changes in water quality. The Riverfly Partnership Approved Kit has been designed in conjunction with the Riverfly Partnership and contains everything the volunteers need to carry out these vital surveys: Professional Hand Net, bucket, sample trays, pipettes, freshwater invertebrate ID guide, spoon, brush and magnifiers.

Banner Net

The Banner Net is a rectangular net measuring 90 x 100cm that is supported on each side by a 120cm wooden pole. The bottom edge of the net is reinforced with a removable, flexible rubber rod. Two hook and loop tabs keep the net rolled neatly when not in use. Available with 500mm mesh, which is ideal for kick sampling of benthic macroinvertebrates.

Kick Sampling Accessories

  1. White Sampling Trays  
  2. White Plastic Bucket 
  3. Graduated Pasteur Pipette
  4. Featherweight Forceps
  5. Q1 Quadrat
  6. 60ml Collecting Pot
  7. Large Pipette 
  8. 9 Pocket Round Sample Specimen Tray

The Freshwater Name Trail

This 8-page fold-out chart is a fully illustrated key to help users identify the main animal groups found in freshwater. None of the identification in the key goes beyond family level, and some of it stays at the phylum or class.

Freshwater Life of Britain and Northern Europe

A beautifully illustrated guide to the wide variety of species found in rivers, streams, lakes and ponds in Britain and Europe.

 

See our complete range of kick sampling equipment online.

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”

Author interview: Benedict Macdonald

Did you know that 94% of Britain isn’t built upon, that Snowdonia is larger and emptier than the Maasai Mara National Reserve, or that Scotland’s deer estates alone cover an area twice the size of Yellowstone National Park?  Britain has all the empty space it needs for an epic wildlife recovery.  So what’s stopping it from happening in our country – and how can we turn things around? 

Rebirding: Rewilding Britain and its Birds is a bold roadmap to reverse the decline of bird populations in Britain, suggesting we need to restore ecosystems, rather than modify farmland.

Author, Benedict Macdonald offered his valuable time to answer our questions about his important new contribution to the discussion of rewilding.

Rebirding Author: Benedict McDonald

What inspired you to become so passionate about restoring natural ecosystems?

In 2014, I began writing Rebirding in the certain knowledge that conservation in this country is failing, the birdsong around us is dying out every year, yet we have all the resources, skill and wildlife lobby to turn things around. I hope that in its small way, Rebirding will do for the UK what Sir David Attenborough’s Our Planet is beginning to do for worldwide conservation – to make people realise that nature is essential, profitable and saveable, even now – and that we have all the resources and skill to do so.

Tell us a little about your background and how you became interested in the natural world?

I never remember the moment of first being fascinated by nature, but I do remember that by the time I was five, I would make weekend visits to Berkeley Castle Butterfly Farm and was entranced by watching the butterflies drinking salts from my fingertips, and I began a collection of ones passed to me by the lady running it – after they had died.  Then early trips to the Welsh coast, and Norfolk, transformed that interest into a lifelong love of birds as well.  From there, their plight has drawn me into understanding and studying ecosystems and a far wider understanding of protecting nature.  Since then, my love of the natural world, both as a naturalist and a TV director, has now taken me to over forty countries.

At 14, I first remember telling someone at a dinner party that I wanted to work in wildlife television. Since graduating from university, I’ve been lucky to work on a range of programmes such as Springwatch, The One Show and The Hunt for the BBC.  Last week, aged 31, I attended the premiere of Sir David Attenborough’s Our Planet for Netflix, launching in the Natural History Museum in London. This is the largest conservation series ever made. I work as the researcher and a field director for the Jungles and Grasslands episodes, directing a number of sequences including desert-nesting Socotra cormorants, the secret life of the Alcon Blue butterfly, and the remarkable lives of the world’s only tool-using Orangutans.

In your opinion, what is the most detrimental practice to the wildlife of Britain?

We are often sold the untruth that what happens to British land is necessary for food production. This is almost entirely untrue.  Only the profitable arable farms of the south, and east of our island, provide a bounty of food for our children.  Dairy lawns and sheep farms in fact create tiny volumes of our daily diet relative to the land area they use. For example, 88% of Wales grows lamb, an optional food resource. 

Of the epic wastage, however, the grouse moor is the ultimate. Eight percent of Britain’s land is burned for the creation of 0.0008% of its jobs and a contribution of just 0.005% to our GDP.  For hundreds of years, thousands of beautiful wild animals have been removed, just so that Red Grouse can be turned into living clay pigeons and killed in their thousands once a year.  Even hunters from other countries find this wasteful and disgusting.  This area covers an area twice the size of Yellowstone National Park – blocking jobs and wildlife alike on an epic scale. Hunting estates in Finland or Sweden, by contrast, juggle the ambition of hunters to shoot a few animals with ecosystems of immense beauty and variety.

Wildlife and commerce are often presented as being in conflict, do you think this is a fair assessment, or can land stewardship that favours biodiversity over profit be of economic benefit?

This is surely the greatest imaginary conflict of our time, successful insinuated, perhaps, by the damaging economies that prevent nature from reaching its full economic potential in our country.  In truth, wildlife IS commerce.  Nature IS money. 

Every year, even without a single charismatic megafauna such as Bison, Elk or Lynx running wild in our country, without a ‘Yellowstone’ or ‘Maasai Mara’, the English adult population make just over 3 billion visits to the natural environment each year, spending £21 billion as they do so. In Scotland, nature-based tourism is estimated to produce £1.4 billion per year, along with 39,000 FTE jobs. 

In contrast, the current models of upland farming demand money from us to survive, but they do not reciprocate jobs, income or natural capital – this is life on benefits and there is no future for young people in it.  In contrast, wherever nature is allowed to flourish, it’s capital potential is wondrous.  In 2009, the RSPB’s lovely but very small reserves brought £66 million to local economies, and created 1,872 FTE jobs. This is more than all of England’s grouse moors, but in just a fraction of their land area.

Right now, however, we are just seeing snapshots of how nature can power and rekindle communities. In Rebirding we often look to other countries to see how true ecosystems could transform economies on a far greater scale.   The final myth that we kick into touch is that Britain is short of space, 94% of our country is not built upon. Most of this area does not create essential food supplies – and is jobs-poor.

Is there one single practise or cultural shift that would be of most benefit to restoring natural ecosystems?

The Forestry Commission is the largest single land manager in Britain.  It now needs to split its forests in two – rewilding key estates like the New Forest and the Forest of Dean: cutting down the spruce and replanting with native trees, then, crucially, leaving large native animals such as Beavers, Elk, cattle and horses to become the foresters.  Economies in these forests would be driven through ecotourism revenues and perhaps some hunting.  Elsewhere, timber forests would remain.  It is hard to think of one single decision that could effect a greater transformation on British land than a decision to return Britain’s once world-class oak-lands to our nation.  Another, however, would be if Scotland’s deer estates, which again cover an area twice the size of Yellowstone, could be incentivised to rewild and regrow their trees.  Hunting could remain – but in this regrowing wilderness would be the potential for Elk, Lynx, Wildcats and a huge expansion in woodland species like Capercaillie. 

Are you optimistic for the future of Britain’s wildlife?

Yes – but only if our conservationists act with the same pragmatism and determination as those who have prevented land reform for decades.  In my closing chapter, I’ve argued that whilst farming unions behave with absolute conviction and coherence, our nature charities often simply say that a few more Skylarks would be nice.  Only if we can unlock the economic arguments of nature, and harness the millions of voices effectively, will we see large areas rewilded in our country.  It is the social and economic transformation that nature provides that needs to be realised – but for that, you need space, and power over land.  At that moment, things will change. In my lifetime, I genuinely believe that after many fierce battles, we will see Dalmatian Pelicans flying over Somerset, and huge areas of Scotland, Wales and upland England slowly returned to a wilder state.  But without absolute conviction this is possible, it will never come to pass.

Benedict Macdonald’s book is out now as part of our Spring Promotion

To discover further reading on the past, present and future of the British countryside, browse our collection.

Supporting Conservation: National Museum of Brazil

On 2nd September last year, a terrible fire destroyed the National Museum of Brazil in Rio de Janeiro. Alongside the vast collection of irreplaceable natural history specimens, the fire also destroyed books and equipment used by the Museum’s researchers for ecological research and wildlife conservation.

Thankfully as museum curator, Débora Pires, wrote shortly after the incident: “The brains did not burn; we are working with a positive agenda!”

A selection of books kindly donated

NHBS were approached by our former director Alan Martin, who provided a list of products which the malacology, arachnology, entomology and lepidoptera departments needed to get back on their feet. Alan, now secretary of the Brazilian Atlantic Rainforest Trust (BART) has close links with many researchers at the museum.

Following this, we decided to coordinate an effort to provide the items that are most critical to their research. We contacted suppliers asking them to contribute and we agreed to supply our own manufactured products, and cover shipping costs of all donated items.

The response from suppliers was fantastic, as the majority were happy to donate all, or most of the items requested. We would like to give huge thanks those who have donated so far: Elsevier, BIOTOPE Parthenope, Brunel Microscopes Ltd, BugDorm, CABI Publishing, Harvard University Press, the Royal Museum for Central Africa, Watkins & Doncaster and finally EntoSphinx. So far, we have received just over £2,000 worth of items, with more to follow.

A selection of items that are being sent in the first shipment.

“I’m really sorry to hear such devastating news. This is truly awful and it’s good to see you are providing such great support to them. We would be happy to send out the [requested] book gratis.” – Linda Jackson, Elsevier

Are you a supplier, publisher or manufacturer and would like to donate books or equipment to this worthy cause? Please contact ruddin@nhbs.com

Visit our Supporting Conservation page for more ways NHBS help wildlife, ecology and conservation across the world.

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 Field Sessions: Waterway Surveys for Daubenton’s Bats

NHBS’ staff members are wild about wildlife! To showcase this, we are encouraging our team to write blogs about their experiences with nature.

During the Summer months, Jon Flynn, a member of NHBS’ Wildlife Equipment Team attended a number of Waterway Surveys for Daubenton’s bats (Myotis daubentonii). Read more about his survey experiences below:

Stretch of the River Teign captured by Westcountry Rivers Trust via Flickr (CC BY 2.0).
Stretch of the River Teign captured by Westcountry Rivers Trust via Flickr (CC BY 2.0).

“On Monday 6th July I took part in a Waterway Survey for Daubenton’s bat along a stretch of the River Teign in Devon. The survey is completed twice per year in conjunction with the Bat Conservation Trust and is part of an ongoing data collection programme for bat species around the UK. The lead for this particular survey was John Mitchell who has been surveying this particular length of the Teign, near Teigngrace, for a good number of years. It was my third survey there.

The survey was due to start 40 minutes after sunset, so we met at 9.00pm and made our way along the edge of a maize field to arrive at our first stopping point. This was to be a transect survey which meant walking a length of the river bank and stopping at ten predetermined points to record bat activity at each one. We stood at the river’s edge and immediately noticed that the river level was a lot lower than it was during our last visit a year or so ago. We recorded air temperature and cloud cover and, as we prepared, various species of bats could already be seen zooming around the trees and openings as they commenced another night of nocturnal foraging. The air was very warm, still and humid, and flying insects were everywhere including a host of moths and some less welcome biting species.

As the light faded it was time to start. With bat detectors switched on and earphones in place, we directed a torch beam on the river’s surface and awaited the arrival of the first Daubenton’s.

Looking for bats at twilight by Nic McPhee via Flickr (CC BY 2.0).
Looking for bats at twilight by Nic McPhee via Flickr (CC BY 2.0).

The Daubenton’s bat is a species which typically occupies riparian woodland.  They often roost in trees along the river bank and hunt by skimming low over the surface of the water for insects. They can take prey from the water’s surface using their feet or tail membrane.

As bats skimmed through the torch beam we were able to count them. We counted the number of passes that we observed and for this a clicker counter is always useful! The bats that we heard but did not see were also recorded as additional information. I set my Magenta 5 at 50hz and listened whilst John relied on his trusty and more accomplished Bat Box Duet.

After four minutes on the stopwatch we finished counting, compared counts and wrote down results. At stop number 1 there were certainly bats present, but they were swooping around quite high above the water surface and not showing the typical behaviour of Daubenton’s – John was dubious that they were our target species so we recorded them only as potential sightings.

Using GPS devices and torches we left for Survey Point 2 further down the river bank and repeated the same process as before. At this location there was no denying that these WERE Daubenton’s bats, as the torch beam caught their pale almost white ventral fur, confirming their identity. Our detectors were full of noise too, including the typical intense zap as a bat homed in on prey.

A close-up of a Daubenton's bat. Image captured by Gilles San Martin via Flickr (CC BY 2.0).
A close-up of a Daubenton’s bat. Image captured by Gilles San Martin via Flickr (CC BY 2.0).

On we progressed with eight more stopping points to go. Occasionally our river bank scrambles took us through thickets of invasive Himalayan balsam (Impatiens glanduliferaand Japanese knotweed (Fallopia japonica) a sobering reminder of how our countryside is changing. The night remained still and warm and it almost felt like we were in a different country.

After eight more stops my watch said 11:20pm. It was good to see that bats were in profusion that night, as John stated ‘It was one of the best ever totals, with one stopping point recording over 50 passes!‘.

Two weeks later and we repeated the process. But this second night felt noticeably cooler and there were fewer insects on the wing. Nevertheless bats were still out and about in reasonable numbers and an average score was calculated between the two Waterway surveys.  Overall there were encouraging signs that the Daubenton’s bat continues to do well along this particular stretch of the Teign.”

To find out more information about the various bat detectors available, go to our website. To find out more about how you can help bats in your local area, have a look at our handy guide.

If you like the idea of taking part in Waterway Surveys (or other kinds of bat surveys) then contact the Bat Conservation Trust or have a look at their website here. It’s great fun and you can put your bat detector to important use!