NHBS Guide: Where to Hang and How to Maintain your Bat Box

Natural roosting sites for bats are in decline due to changes in building standards and countryside management practices. Installing a bat box is a simple and affordable way of providing much needed roost space for a variety of species and now is the ideal time to install one, before bats fully emerge from hibernation. However, placing your bat boxes in the correct location and at the correct height is essential to encourage bats to occupy them. With this in mind, we have put together some answers to the most frequently asked questions about bat boxes – covering where and when to put up your boxes, cleaning and maintenance, and the legalities of checking whether they are occupied.

Which bat box should I purchase?

Bat boxes can be placed in trees, on walls and on or in the brickwork of buildings. To help you choose the most suitable bat box based on where you want to locate it, take a look at our three-part series designed to help you make the right choice:  

Top 10 Bat Boxes for Trees and Woodland

Top 10 Bat Boxes for Walls and Fences 

Top 10 Bat Boxes for New Builds and Developments

When is the best time to put up a bat box?

Bat boxes can be installed at any time of year, but they are more likely to be used during their first summer if they are put up before the bats emerge from hibernation in the spring. If you are installing bat boxes as part of an exclusion project from a building, it is best to erect the boxes four to six weeks before the exclusion. 

Schwegler 1FF Bat Boxes

Where should I hang my bat box?

All bat boxes should be positioned at a height of 3-6 metres (the higher the better) in an open, sunny position (6-8 hours of direct sunlight, or in a location where it receives the morning sun if this is not possible). Try to install the bat box where it will not be disturbed by bright lights at night such as porch or security lights. 

The most common location to hang a bat box is on a tree using a strong nail that is at least 85 mm in length. It is important to use aluminium nails, as these will not damage a chainsaw (or chainsaw user) should they be left in the tree when it is felled. For more details on how to hang your bat box to a tree, wall or fence, please read our blog on where to hang and how to maintain your nest box, which, although mainly focused on bird boxes, is equally relevant for bat boxes. 

How do I check whether the box is occupied?

Many bat boxes have an opening at the bottom and do not require any maintenance as the droppings will simply fall out of this space. If cleaning is required it is essential that you ensure that the box is not occupied before carrying out any maintenance. Once bats have inhabited a roost site they may only be disturbed by licensed bat workers. If you are unsure whether your bat box is occupied the best way to check for box occupancy is to observe the box at dusk (15 minutes after sunset for around 30 minutes) to watch for any bats leaving. Additionally, you can look under and nearby the box for guano (bat droppings). If there are bats present, wait until later in the season and then check again. It’s also a good opportunity to use a bat detector to identify the bats in your box – take a look at our guide on bat detecting for beginners.

Large Multi Chamber Bat Box

How do I maintain my bat box?

The best time to clean the majority of bat boxes (those suitable for summer roosts) is during the autumn or winter. Once you have ensured the bat box is not occupied you can open the box and clean out any droppings. Whilst you are cleaning the bat box it is a good idea to look for any damage, as this may mean it is unlikely to be used. The most likely damage will be broken seams around the roof, because the constant heating and cooling during the day can warp the wood slightly. To repair this, we would recommend using a roof sealant. 

Head over to the NHBS website to browse our full range of bat boxes. If you have any other questions or would like further advice, please get in touch with our team of Wildlife Equipment Specialists (email: equipment@nhbs.com or phone +44 (0)1803 865913).

 

Author Interview: Mark Carwardine, Handbook of Whales, Dolphins and Porpoises

 

Mark Carwardine, on location in Nunavut.

Mark Carwardine is a zoologist, TV and radio presenter, wildlife photographer and bestselling author. He’s written over 50 books about wildlife, travel and conservation including bestsellers like Last Chance to See and Mark Carwardine’s Guide to Whale Watching in Britain and Europe. In his latest book, an outstanding field guide, Mark  Carwardine details the identifying traits and distribution of all 90 species and subspecies of Whales, Dolphins and Porpoises.

 

Mark Carwardine, signing his new book

Mark Carwardine has taken the time to sign a limited number of first edition copies of the Handbook of Whales, Dolphins and Porpoises and answer our questions about the book, his life studying whales and humanity’s role in their survival.

 

 

  1. In your recent books, you’ve given us an insight into the world of whale watching. What motivated you to study cetaceans?

I’d just finished studying zoology at university (I couldn’t have done anything else – all I’d ever wanted to do since I can remember was to work with animals) and I had my first whale encounter. I was 21 years old, on a half-day trip from Long Beach, California, when a grey whale suddenly breached right in front of me. In my mind’s eye, I can see it leaping out of the water and remember deciding – at that very moment – that I wanted to spend as much of my life with whales as possible. Now I am a self-confessed whale addict and need to see a whale at regular intervals just to survive normal daily life.

Also, I think it is an incredibly exciting time to be a cetologist. These enigmatic marine mammals are incredibly difficult to study – they often live in remote areas far out to sea and spend most of their lives out of sight underwater – yet we now have access to space-age technology that, at last, is revealing some of their best-kept secrets

 

  1. You must have many stories about whales, dolphins and porpoises. What is your most memorable encounter with cetaceans?

I think it would have to be with the friendly grey whales in San Ignacio Lagoon, Baja California, on the west coast of Mexico. These 14-15-metre whales literally nudge the sides of our small whale-watching boats and lie there waiting to be tickled, scratched and splashed. Incidentally, if you’re wondering if it’s a good policy to encourage people to touch wild whales, consider this: if you don’t scratch and tickle them, the whales simply go and find a boat-load of people who will. Even the local scientists approve.

Yet it’s hard to believe that these very same grey whales once had a reputation for being ferocious and dangerous; when they were being hunted they fought back – chasing the whaling boats, lifting them out of the water like big rubber ducks, ramming them with their heads and dashing them to pieces with their tails. Nowadays, they positively welcome tourists into their breeding lagoon. Somehow, they seem to understand that we come in peace and, far from smashing our small boats to smithereens, they are very gentle and welcome us with open flippers. They seem to have forgiven us for all those years of greed, recklessness and cruelty – and trust us, when we don’t really deserve to be trusted. It’s a humbling experience, to say the least. I’m very lucky – I have been to San Ignacio more than 70 times over the years – but it still blows me away. It’s got to be one of the greatest wildlife encounters on Earth.

 

  1. Whales and other cetaceans are beloved worldwide, what is it about these charismatic creatures that humans connect with so strongly?

No one ever says, ‘I can’t remember if I’ve seen a whale’. A close encounter with one of the most enigmatic, gargantuan and downright remarkable creatures on the planet is a life-changing experience for most people. At the risk of sounding irrational and unscientific, a close encounter with a whale simply makes you feel good. Actually, it’s more than that. Just a brief flirtation with a whale is often all it takes to turn normal, quiet, unflappable people into delirious, jabbering extroverts. On the best whale watching trips, almost everyone becomes the life and soul of the party. Grown men and women dance around the deck, break into song, burst into tears, slap one another on the back and do all the things that normal, quiet, unflappable people are not supposed to do. I have seen it so many times.

It’s not really surprising: whales and dolphins are shrouded in mystery, yet the little we do know about them is both astonishing and awe-inspiring. They include the largest animal on Earth (the blue whale – the length of a Boeing 737) and some of the oldest animals on Earth (one bowhead whale was 211 years old when it was killed by aboriginal whalers – who knows how much longer it might have lived?) as well as the deepest diving mammal, the mammal with the longest known migration, the loudest singer, the largest carnivorous animal, and many other astonishing record-breakers.

Southern Right Whale, Handbook of Whales, Dolphins and Porpoises
  1. What advice would you give to the naturalist interested in cetaceans and wanting to learn more?

Read my new Handbook of Whales, Dolphins and Porpoises (I couldn’t say anything else, could I?)! It includes everything you could possibly want to know about all 90 species.

 

  1. What was the most challenging thing for you when creating this guide?

Well, it dominated my life for six years. I used to lie awake at night, worrying about whether to describe something as ‘blue-grey’ or ‘grey-blue’. I decided to go back to original sources for everything, which meant reading 11,000-12,000 scientific papers, poring over decades of my own field notes, and studying untold numbers of photographs and video clips. I also corresponded with species experts all over the world; they were all incredibly generous with their information and advice, often giving me new data before it has been published in the scientific press. I worked with three outstanding artists, too – Martin Camm (who did most of the illustrations), Toni Llobet and Rebecca Robinson – who, between them, produced more than 1,000 original and meticulous artworks. And as for the distribution maps… some of those took several days each. But, I have to say, it’s incredibly satisfying to see it all come together in this one book.

 

  1. What are your concerns or hopes for the future of cetaceans?

Sad to say, human impact has now reached every square kilometre of the Earth’s oceans. In particular, commercial whaling and other forms of hunting, entanglement in fishing nets and myriad other conflicts with fisheries, overfishing, pollution, habitat degradation and disturbance, underwater noise, ingestion of marine debris, ship strikes and climate change are some of the main threats being faced by whales, dolphins and porpoises around the world. We’ve already lost the Yangtze river dolphin, from China. The next to go is likely to be the vaquita, a tiny porpoise from the extreme northern end of the Gulf of California in western Mexico; there are probably just 10 survivors clinging on against all the odds. But the good news is that, with proper protection, we can make a difference. Whaling pushed the humpback whale to a population low of fewer than 10,000, but now there are at least 140,000 and counting.

 

  1. You say this will be your last book: now this guide is complete, are there any other projects in the pipeline?

Ah, yes, I did promise my family and friends that this would be my last book (by way of an excuse for never having any free time)! It feels like the culmination of a life’s work with whales and dolphins – and it will be my sixtieth book, which seems like a nice round number to finish on. But the trouble is that I love writing and have lots more ideas! In fact, I am working on a photographic book about the polar regions with the landscape photographer Joe Cornish (he is providing the landscape pictures, me the wildlife ones) – so I’ve already broken the promise. Apart from that, I’ve been setting up some new whale watching trips and am planning to do more radio programmes (I’ve missed doing radio), among many other things; and, of course, there is an awful lot to do on the conservation front that will keep me busy for a long time yet.

 

Handbook of Whales, Dolphins and Porpoises
Hardback,  Nov 2019,  £29.99 £34.99

This outstanding new handbook to Whales, Dolphins and Porpoises is a comprehensive and authoritative guide to these fascinating mammals.
With almost 1,000 detailed, annotated illustrations, this new handbook describes all 90 species and subspecies.

Signed copies available, while stocks last.

Browse our full range of cetacean books.

Devon Greater Horseshoe Bat Project Q&A

Recently we spoke to Helen Parr from the Devon Greater Horseshoe Bat Project about the wonderful work that is done in our local area for this rare species. Helen Parr also details the importance of conserving the Greater Horseshoe Bat, how we all can help ensure its survival and shares her hopes for the future.

 

  1. For those who haven’t heard of the Devon Greater Horseshoe Bat project before, can you summarise what it is?

Our project works with local communities to secure a future for Greater Horseshoe Bats in Devon, their northern European stronghold. It is a partnership project of 18 organisations led by Devon Wildlife Trust and is supported by the National Lottery Heritage Fund, as well as other funders. The priority areas for the bat team are 11 maternity roosts around the county.

The countryside near the breeding roosts must provide everything that the bats need to survive and raise healthy young for the next generation. Their favoured foods are moths and beetles so they need good foraging and hunting grounds such as hedges, orchards, meadows, woodland edges and streams. Sadly we have lost 50% of our hedgerows and 98% of wildflower meadows in recent decades, so there is lots to be done! Working with landowners and farmers is a vital part of what we do.

 

2. What role do you play in the Devon Greater Horseshoe Bat project?

Helen Parr at a Buckfastleigh Bat Event

I’m the Community Engagement Officer on the project. Raising awareness and getting people involved is crucial so that when our project ends in autumn 2020, all the great work currently being done to help the bats will continue into the future.

My work with schools is one way to do this – children can work towards a series of Bat Buddy awards. They are always fascinated to learn about the Greater Horseshoe Bat; as a rare animal living on their doorstep, it has local relevance to them and they can make a practical difference at home or in their school grounds. Some of the children may be inspired to become our future conservationists!

I also support people in towns and villages in their efforts to become accredited as a ‘Bat Friendly Community’. For example, after some training and buying of bat detectors, local volunteers have arranged bat walks to introduce people to the world of bats.

Helen on location in Avon Valley

Managing our website www.devonbatproject.org along with social media allows us to spread the message to a wider audience, and during the summer months, there are plenty of events such as bat walks to introduce people to the magical world of bats.

 

3. What’s your favourite thing about the Greater Horseshoe Bat?

Credit: Mike Symes
Greater Horseshoe Bat, Credit: Mike Symes

do love their funny horseshoe-shaped noses, it’s where they get their name from. They use these amazing looking noses for their echolocation – emitting sounds to find their way around in the dark and catch their prey. It’s an amazing technique honed over millions of years of evolution! People are always surprised and intrigued when they see images of this bat and hear their echolocating sounds.

 

4. Can you tell us why the project focuses on the Greater Horseshoe Bat in particular?

Greater Horseshoe Bats are an important indicator of great habitats; if they are present in an area you know that the surrounding habitats will be good, not just for bats but other wildlife too. However, their numbers have gone down by 90% in the last 100 years, and they remain under threat from habitat loss and declining insect numbers. Therefore if we can improve things for Greater Horseshoes, over time the whole biodiversity of an area will increase.

5. There are many ways to survey bats, what techniques and technology do you use for the project?  

Song Meter SM4BAT FS Bat Detector

Devon Bat Survey is our Citizen Science project involving hundreds of volunteers each year – we use 20 SM4 Bat detectors for this to get as wide a coverage as we can across the county. People borrow the equipment for 3 nights; as well as collecting valuable data on Greater Horseshoe, all other bats are recorded too. Once the data has been returned and run through specialist software, reports are produced. Anabat Express detectors are also used to survey the land of some of the farmers we work with.

Helen with a new microphone

We have placed an infrared camera in one of the roosts – this is fascinating to watch during the breeding season. On bat walks, we use the Magenta 5 handheld detectors so people can hear the bats, along with the Echo Meter Touch detector so we can record and identify what we find.

 

6. How is the data that is collected used?

The data is sent to Devon Biodiversity Records Centre. From there it can be used by local authorities, conservation bodies, developers and communities to enable them to make informed decisions that might impact on bats. In addition, we have had a University student use the data to undertake habitat modelling to better understand landscape use by Greater Horseshoe Bats.

 

7. At this year’s National Bat Conference, there was talk of potentially using trail cameras to survey the emergence of bats from their roosts. If the right technology exists, do you think the Devon Greater Horseshoe Bat project could make use of it? 

Browning Strike Force HD Pro X

As we are in the final year of our project, we won’t have the time or funding to take advantage of this, but I think trail cameras sound like a great idea for any future projects like ours. Advances in technology will always be useful in bat conservation. As the Echo Meter Touch or similar technology becomes more affordable in future, I often imagine how amazing it would be to see everyone using their smartphones to gather and upload bat data – the ultimate citizen science project!

 

8. How can readers get involved with the Devon Greater Horseshoe Bat project?  

  • Look out for Devon Bat Survey which starts again in April 2020
  • Do some bat friendly gardening – even the smallest garden can be a home for insects – great food for bats
  • If you have a piece of land (large or small) you could use our Management Guides to improve it for bats
  • Keep an eye on our website for any events with us or our partners –especially September 2020 which will be our busiest month of events ever with around 30 events for our final Bat Festival.

 

9. What trends are being suggested by the project – how is the Greater Horseshoe Bat doing?

It’s too early to say as a lot more detailed analysis will need to be done, and the measures put in place by towns, villages and individual landowners will take time to show an effect. The Devon Bat Survey will not really show population changes but can indicate changes in distribution. Work being undertaken by the Bat Conservation Trust will allow us to see the changes over time of the work that we have done. However the general consensus is that populations are stabilising and starting to increase, but I don’t think we can be complacent as the loss of one maternity roost could have a dramatic effect on the population numbers. 

 

10. What is being done to support the population in the future?

Throughout the project, the team has aimed to spread the word about these amazing little creatures and to encourage good habitat management for bats. We hope that once the project comes to an end that the people who share their spaces with these bats will care for them in the future, with a realisation that all species will benefit from actions to improve biodiversity across Devon, including humans!

 

Autumn Hedgehog thoughts

Three’s a crowd?

The noise that a hedgehog makes when crunching dried cat food is surprisingly loud… and when you have two or three sharing the same plate, as I sometimes do, they produce quite a din! Such a din in fact that I can hear their munching and squabbling from my bedroom window – even with the windows shut. But what a satisfying racket! It is a real privilege and a delight to have hedgehogs using your garden. By feeding them and making your garden hedgehog friendly you can take comfort in the knowledge that you are doing your bit to help these beleaguered animals.

In the 1950s, there were possibly as many as 30 million hedgehogs living in the UK, but today there could be as few as 522,000 – that’s a reduction of 97%. Suggestions as to why the population of these enchanting animals has taken such a nose dive include: the intensification of agriculture and the loss of hedgerows (which are important wildlife corridors), the alarming decline of the invertebrates on which hedgehogs feed (almost certainly due to the use of pesticides) and another, perhaps surprising factor, is predation by badgers. It turns out that wherever badgers thrive hedgehogs struggle, especially in areas where there is limited cover. Moreover, we are sadly all too familiar with the sight of squashed hedgehogs on our roads and it is thought that many thousands meet their end in this way each year. Although hedgehogs are very urbanised, their road safety skills remain poor!

Hedgehogs are also struggling with the current trends of homeowners who are turning their gardens into “garden rooms”. By covering our gardens in decking, patio, artificial lawn or tarmac we are reducing their wildlife value including foraging opportunities for the hedgehog. The erection of impenetrable garden fencing only adds to the problem because it does not permit egress from garden to garden. Hedgehogs may roam about 2km and visit up to 20 gardens every night to seek out food sources.  Although surveys suggest that urban hedgehogs might actually be doing better than their rural cousins – these current gardening fashions are not doing anything to promote their cause. Our most popular mammal favours an untidy garden with fences full of holes.

So, what can we do to help the hedgehog?  As I write this blog we are marching through autumn, but hedgehogs are still out and about, trying to put on weight for hibernation. November 5th is approaching and this is a dangerous time for hedgehogs as they often seek shelter within bonfire piles, so please check for hedgehogs before setting yours alight.

You and your garden can become hedgehog friendly by just providing some or all of the following:

  • Make sure that hedgehogs can gain access in and out of the garden. Holes in fences only need to be 13cm square and they will soon be found and used on a regular basis. If you want to neaten off the hole, then consider the Eco Hedgehog Hole Fence Plate which is made from 100% recycled plastic and available at NHBS.
  • Include compost heaps and overgrown areas in your garden as these are a great source of invertebrate prey
  • Do not use slug pellets and pesticides in your garden.
  • Provide a water source for hedgehogs such as a pond with a gently sloping edge, or a simple bowl

    Hedgehog House
  • Provide areas where hedgehogs can spend the daylight hours, hibernate and even produce their young. This can be a simple wood or leaf pile, or if you prefer you could purchase a hedgehog house or shelter of which there is a large range of choices within our catalogue and on the website
  • Make hedgehogs safe; as well as checking your bonfire piles, be careful with the use of lawn mowers and strimmers and make sure that netting cannot cause entanglement – for example, the bottom edge of fruit netting can be raised from ground level.

Of course, hedgehogs also appreciate some help in food sourcing and are quick to make use of our generosity. Feeding becomes particularly important in periods of pro-longed dry weather (such as we had this year) when soft-bodied invertebrates like slugs, snails and earthworms are less likely to be at large. It is also important to put out food towards the end of summer and beginning of Autumn when late born hoglets need all the help they can get in putting on enough fat to sustain them through the winter months. It is worth remembering that a hedgehog needs to weigh about 600g at the start of the hibernation period in order to survive until the following Spring.

Feed hedgehogs on wet or dry cat food and this can be supplemented with items like sunflower seeds, nuts and live or dried mealworms (Please feed these in moderation to ensure a balanced diet). There are also proprietary brands of hedgehog food available which provide a good balance of the nutrients that they need. But never put out bread and milk! Hedgehogs are intolerant to lactose and bread doesn’t provide the nutrition they need.

Hedgehog Bowl

Put the food out in a bowl or saucer in the same place every night and hedgehogs will soon learn where it is located. Of course, this food may also be found by neighbourhood cats and foxes, so you could try to protect the food by placing it within a shelter.

Browning Strike Force HD Pro X

It is great fun to put out a trail camera positioned near the food source so that you can obtain images and videos of your garden visitors – this is how I discovered that at least three visited my garden!

As winter sets in be on the lookout for hedgehogs that are out and about in daylight. An animal that is showing this unusual behaviour is likely to be a late autumn born youngster and probably starving. These animals need help and should be taken in and fed. It is best to contact your local wildlife hospital or rehabilitation centre for advice in this situation.

Hedgehogs are fantastic little mammals whose ancestors first appeared on this planet at least 52 million years ago. By giving some thought to the ones in your garden you can take comfort in the fact that you are contributing to their continued survival. It is very rewarding to have hedgehogs in your garden and certainly worthwhile putting up with their noisy nocturnal snacking.

 

Author Interview: Adele Brand, The Hidden World of the Fox

In The Hidden World of the Fox, Adele Brand shows us how this familiar yet enigmatic animal has thrived in ancient wildwood and adapted to life in the supermarket car parks and busy railway stations of our towns and cities.

 

© Gillian Brand

Ecologist and author, Adele Brand has devoted much of her life to studying foxes and has a wealth of knowledge and first-hand experience to share about these often misunderstood animals.

 

 

© Adele Brand

1. Can you tell us a little about your background and how you got interested in foxes?

The Surrey countryside is an education of its own. I grew up there, learning that the hills I loved were home to more than people. Foxes have always been around me: loping across roads at dusk, hunting for voles near the local horses, and every glimpse into their lives cemented my interest. Their vivid personalities, their incredible adaptability in coping with nearly any habitat, the complexity of their social lives – foxes always provide rich study material. I am now an ecologist who has worked with mammals from Mexican jaguars to Surrey dormice, but I continue to monitor my local foxes and the landscape in which they live.

© Adele Brand

2. People often have polar-opposite opinions of foxes: why do you think foxes evoke such an emotional response?

Foxes touch human emotions. Of all our wild mammals, they are the easiest to get to know as recognisable individuals, and observing the ups and downs of their lives builds strong empathy. Many people who feed and watch garden foxes give them names and feel that they are an important part of their lives. On the other hand, some people have a strong ideological view that foxes (and sometimes wildlife in general) simply doesn’t belong near civilisation. When foxes behave in ways which would be reprehensible in a human – killing multiple chickens, scattering rubbish, etc. – they are often judged as they are indeed human. In my experience, a person’s attitude towards the fox is likely to reflect their general beliefs about nature; someone who has experienced damage but considers wildlife of intrinsic worth is actually likely to be more tolerant than a person who dislikes them on principle but has never experienced harm.

© Adele Brand

3. If anybody wanted to observe foxes, how would they go about it and what equipment, if any, would they need?

To see a fox, to an extent you need to think like a fox: the voles, blackberries and rabbits that it seeks are particularly abundant in woodland edges and rough grassland. Foxes are very much creatures of edge habitats so scanning these places – plus hedgerows – with powerful binoculars (I use 10 x 50) is a good start. While foxes can be active at any hour, they are most frequently crepuscular, so dawn and dusk are good times. Fields that are intensively grazed or have heavy recreational pressure are less promising sites. I would also recommend a good tracking book because being able to identify fox footprints, fur and scat will greatly increase understanding of how they are using the landscape. Additionally, it is worthwhile to keep alert even in unconventional places for wildlife watching. I have often seen rural foxes while travelling by train, for example.

© Adele Brand

4. Do foxes pose any ‘real’ danger to humans and pets?

There is an undercurrent of concern about foxes posing a risk to people. It is worth remembering that they are smaller than they can appear at a distance and in general have no interest in approaching us. A fox that sits down and watches is not ‘bold’ or ‘brazen’; it is assessing the situation and will bolt for a gap under the fence if it feels threatened. That said, trying to ‘tame’ them with hand-feeding or encouraging them indoors can lead to problematic encounters. I would always encourage people to enjoy watching their local foxes, but also to keep them wild.

Pets are a mixed issue. Clearly, rabbits, guinea pigs and chickens need to be kept in secure pens. Cats and foxes typically ignore each other, but kittens and very elderly cats are more vulnerable to everything in the outside world.

© Adele Brand

5. Despite the best efforts of humans, foxes are survivors; however, do you think their future is secure?

Interesting question. The conservation status of red foxes globally is secure, but with caveats. Foxes have become extinct in South Korea due to poaching and habitat loss, while in the USA, the Sierra Nevada subspecies is critically endangered. There is some evidence that the British population is declining, although they remain widespread. They have survived the industrialisation of farming, but they are not unaffected by it. A rural landscape that has thick, species-rich hedgerows, wildlife margins in arable fields, and less fragmentation from development would benefit foxes along with many much rarer species.

© Adele Brand

6.While writing your book and observing foxes; was there one surprising fact or discovery that you didn’t know previously?

The unlikely relationship between foxes and Mediterranean hackberry: seeds from this plant germinate earlier and are much more likely to survive if they pass through the intestinal tract of a fox and are excreted in its droppings.

  1. Do you have any new projects in the pipeline that you’d like to tell us about?

At the moment, I’m continuing to study how foxes are affected by the changing land uses in the Surrey Hills. I’m particularly interested in how the intensity of grazing from livestock and horses changes their habitat use.

The Hidden World of the Fox
Hardback,  Oct 2019,  £9.99 £12.99

Adele Brand shines a light on one of Britain’s most familiar yet enigmatic animals, showing us how the astonishing senses, intelligence and behaviour that allowed foxes to thrive in the ancient wildwood now help them survive in our cities and towns.

Browse all our books covering Foxes, Wolves, Dogs and other Canids

 

 

 

 

Handbook of the Mammals of the World, an interview with the series creators

The final volume in the Handbook of the Mammals of the World series will be published in October 2019.

The first volume was published over a decade ago and Volume 9: Bats completes this hugely important reference series to the mammals of the world.

 

We asked publishers Josep del Hoyo and Albert Martinez to share their thoughts about the conception, production and fruition of this and the earlier Handbook of the Birds of the World series.

1. What inspired you to embark on the Handbook of the Mammals of the World series?
JOSEP: Well, in this case, our inspiration was very clearly the series’ predecessor: the Handbook of the Birds of the World (HBW). When we started on the Handbook of the Mammals of the World (HMW), we had already published 12 volumes of HBW and the results were encouraging, both in terms of enthusiastic reviews and commercial success. So, we thought it would be worthwhile to try to produce a sort of “sister series” covering all the mammals of the world. We saw it as natural that there should be a Handbook to properly treat all the animals forming part of the same Class to which we, as humans, belong. We were aware that while the number of professionals dedicated to mammals were high, that the number of amateur people interested in the group would be much lower than the equivalent public in birdwatching, so the series would be commercially riskier. But we were convinced of the project’s importance for science and conservation, so we decided to look for some support to make it happen.
We were extremely fortunate to find this support in the form of two Chief Editors for the series that were essential for its success. On one hand, celebrated primatologist Russ Mittermeier joined the project, bringing his own knowledge to the series, as well as achieving important funding, most notably from Conservation International, to get the project off its feet. Russ also enlisted the involvement of IUCN, International Union for Conservation of Nature, further emphasising the importance of conservation in the series, and drawing from the expertise of many of the IUCN Species Survival Commission (SSC) Specialist Groups.
On the other hand, Don Wilson, at the time Chairman of the Department of Vertebrate Zoology and Curator of the Division of Mammals at the National Museum of Natural History of the Smithsonian Institution, generously volunteered his time and effort to help the project, and this continued throughout the series in many different facets. For example, Don’s help was especially useful for finding and contacting the specialists to author the chapters, as well as for providing a strong taxonomic base with his book Wilson & Reeder (2005), Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed).
We are very grateful to both Russ and Don, and to the other Chief Editors and external supporters who made the project possible.

2. Volume 1 was Carnivores, a very charismatic order of mammals; when this was published in 2009, did you already know how many volumes the series would contain, and in what order they would be published?

ALBERT: We proposed Carnivores as an exploratory volume to study the viability of the project as we felt that it could be one of the volumes with the greatest interest for the readers.
When the first volume was published and once it was proven that the series was viable, we agreed shortly after with the Chief Editors, Don Wilson and Russ Mittermeier, on the total number of volumes in the series—eight—and their order. In the first preparatory meetings it was quickly decided not to follow a strictly phylogenetic sequence, and so, for instance, walruses, seals, and sea lions were treated along with the rest of sea mammals and not in the Carnivores volume.
The most important departure from the original plan was the need to split rodents into two volumes: Volume 6 and Volumes 7, in order to maintain the level of detail that had characterised the previous volumes. This decision was made after direct consultation with HMW subscribers (of 1840 respondents, 92% favoured two volumes). So, the series was extended from eight to nine volumes.

3. Could you provide a rough idea about how much hard work goes into publishing a single volume in the series?
ALBERT: The work is immense and summary numbers for the series are impressive (c.8000 pages, 443 colour plates, 5300 photos, 6400 range maps, 10,000s of references), as is the number of the people involved: 312 authors of texts, 10 artists, and more than a thousand photographers from all over the World.
The editing process for a single volume lasts between one-and-half and two years, it begins with the commission of the different families to the authors of texts and the plates to the artists. The in-house editing phase has lasted about a year in the last volumes. The first three volumes appeared with a cadence of two years, but from HMW4 on we have managed to publish a volume per year without fail.

4. Is there a certain family or order of mammals you are particularly fascinated by?
ALBERT: It is difficult to choose, but maybe Carnivores, Hoofed Mammals, or Primates. Also Marsupials as they are really exotic and give us a very clear idea of the big conservation threats that face island species or species with reduced ranges. Looking at the distribution maps you become very aware of the high number of species with tiny distributions and those that only survive thanks to strict conservation measures.

5. What challenges did you face along the road to completion of this series?
ALBERT: During the 11 years of editing the HMW series (2009–2019) and with so many people involved, we have faced all kinds of difficulties with authors, artists, and editors (illnesses, accidents… and even Brexit at the end!). Especially complicated has been the instability in the taxonomy with habitual last-minute changes in the final stages of the editing process (e.g. new species described, rearrangements in the sequence of the species due to improvements in the knowledge of phylogenies, etc), which have forced us to completely redo already laid-out families many times. Despite such challenges, I want to highlight the impressive enthusiasm and dedication which all the participants have shown for this project.
It is very rewarding to see the commitment and effort that many experts have put into the project, having themselves seen in the HMW series an important achievement in their field of work. The selfless collaboration that we have received from a multitude of specialists not directly involved in the project has helped us in many ways, like providing material to allow the artists to draw rare species.

6. What do you hope will be the legacy of the Handbook of the Birds of the World and the Handbook of the Mammals of the World series?
JOSEP: Since we finished the HBW series some years ago (2013), we now have a better perspective on what this legacy may be. We have some indications that show that HBW, which covered all the birds of the world for the first time ever, represents a “before and after” in knowledge and interest in birds. It is true that before HBW there was a good deal of interest in birds in parts of the world like Europe, North America, Australia or South Africa, but in many other parts of the world, including in Tropical Regions with the richest biodiversity, there was a clear lack of even the most basic information. So we think the existence of the series has helped a bit to balance this situation, and has been an influence so that now many more people are interested not only in birds of their own country, region or local patch, but also at the global level, which we are convinced is good, eventually, for conservation.
With the HMW series, which we are just finishing now, we think similar effects will appear. While with birds the interest across the families was more or less regular, mammals have an added complication that some groups receive much more attention than others. So we think that the volumes dedicated to groups like rodents and, especially, the last one dedicated to bats, will be important for bringing together the knowledge that was much more disperse and less accessible, in a single, comprehensive treatment. This will also show where there are still gaps in the knowledge to encourage further study.

7. How do you feel about the imminent fruition of over ten years of publishing the Handbook of the Mammals of the World series – do you have any new projects in the pipeline that you can tell us about?
JOSEP: Well, we have several big projects that we are studying carefully, but we are also aware that the number of people interested in other groups of biodiversity is many times smaller than those interested in birds and even in mammals. But a number of good possibilities do exist, particularly if there is an awareness that such coverage gives a push to the knowledge and conservation of the group.

Meanwhile, we are still very busy with birds and mammals. For birds we published the HBW and BirdLife International Illustrated Checklist of the Birds of the World in two volumes and we are already working on the equivalent illustrated checklist for the mammals. Also, given the important patrimony we hold of the illustrations of all the birds of the world, we have started the Lynx and BirdLife International Field Guides Collection, which is producing good results, and we hope we can pursue a similar line with mammals. In this way, the two Handbook series can help us create field guides to countries for which they are none, thus, raising awareness and knowledge, which in turn can lead to greater local conservation.

HWM, Volume 9: Bats and the complete Volumes 1 to 9 are available at a special pre-publication price until the end of September

Handbook of the Mammals of the World, Volume 9: Bats
Oct 2019 *124.99 £144.99
The final volume in this monumental series profiles the world’s bat fauna.

*Pre-publication price applies to orders until 30th September 2019

 

Handbook of the Mammals of the World, Volumes 1 to 9
Oct 2019 *999.00 £1250.00
The whole set for under £1,000: this offer is available for a limited time only..

*Pre-publication price applies to orders until 30th September 2019

 

Browse all volumes in the Handbook of the Mammals of the World series

Browse all volumes in the Handbook of the Birds of the World series

 

The NHBS Guide to Bat Detecting for Beginners

How to watch bats

Watching bats can be a fascinating and rewarding hobby. If you want to go out and watch bats yourself, you may not have to travel as far as you think. Bats live all over the UK in the countryside, towns and cities. Head down to your local patch of woodland, park or even your own back garden around sunset and watch the sky. Some bats fly quite high in the sky around the tops of trees, others fly lower, even at eye level. If you have a large pond, river or lake nearby, watch the surface of the water and you might see a Daubenton’s bat skim across the surface catching insects. Warm, dry and relatively still nights are best when it comes to bat watching. You are more likely to see bats around sunset and sunrise and they can be seen between March and October. 

An Introduction to Bat Detectors

To really immerse yourself in the world of bats, it is worth using a bat detector.

Bats use calls for communication, navigation and hunting but these are at frequencies above that of most human hearing. So even if you’re watching dozens of bats above you, you’re unlikely to be able to hear their calls. Bat detectors are devices that convert these ultrasonic calls into audible sounds and because different bat species call at different frequencies, bat detectors can even help you identify which bat is calling. Bat detectors are great fun to use and can help you learn a lot about bats. There are several different types of bat detectors on the market, at varying prices and with varying features. We’ve highlighted some of our favourite, entry-level bat detectors below.

Magenta 4 & Magenta 5 – Heterodyne

Our most popular range of beginner detectors are the Magentas. The Magentas are incredibly easy to use with a frequency dial to allow you to tune to a certain frequency, a front-facing speaker so that you can hear the converted bat calls, and a volume dial. They use a method of call processing called Heterodyne which works by tuning to one frequency at a time. The only difference between the Magenta 4 and the Magenta 5 is that the 5 has a digital display of the frequency that you are tuned to whereas the 4 has the frequencies on the tuning wheel which is lit by a small light. You can use Magentas with headphones and even record the outputted calls with a recorder (available separately).

Batscanner – Super-Heterodyne

The Batscanner is one of the easiest detectors to use, automatically scanning the whole frequency range and adjusting accordingly when it detects a bat, displaying the peak frequency on the digital display. This means you don’t have to tune anything and you won’t miss a bat because you’re tuned to the wrong frequency. The call output is clear and the Batscanner intelligently filters out non-bat low frequency calls giving you a clean, noise-free output.

Baton & Duet – Frequency Division

The BatBox Baton is perhaps even more simple to use than the Magentas, with just 1 button operation – the on/off button. You do not need to tune this detector – it will automatically detect all frequencies simultaneously as it works through ‘frequency division’, where all ultrasonic calls are divided by a factor of 10, pushing them into the human hearing range. Audio is played through the front facing speaker and when the Baton is plugged into a computer, you can see sonograms (visual representation of bat call) on the software included with the Baton.

The BatBox Duet is a similar but more sophisticated detector that is great if you want to take your bat detecting to the next level. It uses two modes of call processing: with heterodyne, you can tune the detector with the frequency dial and this is displayed on the backlit screen, much like a Magenta, but the detector also processes the ultrasonic sounds in frequency division mode and this can be captured using an audio recorder (available separately).

Echo Meter – Full Spectrum

The Echo Meter is a completely different type of bat detector but one that is very popular and has many amazing features, ideal for all levels of bat enthusiasts. It plugs into a compatible phone or tablet and with the help of a free app, turns your phone/tablet into a fully functional bat detector. The app displays live sonograms of bats and an intelligent algorithm identifies the most likely bat species based on the calls, all in real-time. The app can GPS tag your sightings and you can record, replay and download bat calls.

How can I help bats?

It is easy to encourage bats into your garden and there are many things you can do to help your neighbourhood bats. Have a read of our guide to helping your local bats for some ideas and inspiration. Things like putting up a bat box can help tremendously. It is often recommended to use wood concrete boxes which are made from a mixture of wood fibres and concrete. They are durable and they provide improved thermal insulation which benefits roosting bats. You can choose between cavity and crevice bat boxes based on the species you are trying to attract, for example, common pipistrelles prefer to roost in crevices.

The Lela Bat Box and the Gabriella Bat Box are wood concrete bat boxes designed to provide roosting space for a variety of crevice dwelling species. The Lela has two internal crevice chambers and the Gabriella contains one extensive single compartment.

The Isabella Bat Box is perfect for those cavity dwelling spcies you may want to encourage.

 

Other useful equipment and books

Listed below is some great kit and books to get you started or develop your knowledge on bat detecting and bat watching:

DIY bat detector

This DIY Bat Detector Kit has everything you need to build your own heterodyne bat detector. It is easy to assemble and does not require any soldering skills, simply follow the 34-page manual, available in both English and German.

 

Zoom Handy Recorder: H1n

This small, handheld audio recorder is ideal for plugging into your bat detector and recording the bat calls you are hearing. Recordings are stored on an SD card and can then be viewed on a computer to analyze further.

 

Nebo Mycro Rechargeable Headlamp

This handy rechargeable headtorch will help to keep your hands free when you’re trying to change settings or navigate in the dark. The Nebo Mycro has a bright, clean 150 lumen beam with easy-to-use mode and power buttons.

 

A Guide to British Bats

FSC’s ‘A Guide to British Bats’ is a fold out, laminated guide to help you identify bats through physical appearance and call frequency.

 

 

Bat Calls of Britain and Europe: A Guide to Species Identification

This practical guide is perfect for learning more about bat species identification, the equipment used and bat call analysis.

 

The Bat Detective: A Field Guide to Bat Detection

This field guide is perfect for beginners wanting to start learning how to identify bats from their calls. As each topic is explained references are given to the relevant tracks on the CD. The 48 tracks found here are the first ever compilation of British bat recordings on CD.

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 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.

Lifetrap

The Lifetrap (also known as the Heslinga) has a similar set-up to a Longworth trap – with a tunnel and nest-box – but with a slightly different tripping mechanism. All the openings have been kept as narrow as possible to avoid damage from the gnawing of trapped animals. The trap is made from lightweight aluminium with a green powder-coating for effective camouflage in the field.

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 can 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 the presence of red squirrels 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 offer a very low disturbance method of detecting dormouse presence in a habitat. Dormice passing through the tunnel cross over inked pads which causes 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

Pesola Light-Line Spring Scales

Pesola PTS3000 Electronic Scale

Heavy Duty Extra-Large Polythene Sample Bags

Animal Handling Gloves

Marking Flags

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.


Atlas of the Mammals of Great Britain and Ireland
Hardback | Mar 2020

The most up-to-date records of mammal distributions in Great Britain and Ireland. Fully illustrated with photographs and high-resolution distribution maps and details of species identification.

 

Methods for Ecological Research on Terrestrial Small Mammals
Hardback | Apr 2022

This is a one-stop resource compiling all the informaiton readers need to conduct state-of-the-art research on small terrestrial mammals across the globe. It covers the full spectrum of issues, from capture, handing, identification, reproduction, demography, and taxonomy to behaviour, diet, evolution, diseases, movements, morphometrics, and more.

Live Trapping of Small Mammals
Paperback | Jul 2019

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

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

This handy booklet provides information on how to identify and analyse the undigested small mammal remains found in owl pellets.

 

 

British Mammal Tracks and Signs
Unbound | Jan 2022

This guide features clear illustrations of the tracks left by mammals with paws and cloven hooves, as well as droppings, burrows, nests and feeding remains.

 

 

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 Harp Trap

The NHBS Harp Trap 

Earlier this year we were delighted to launch another exciting product manufactured here at our base in Devon. After a concerted period of design and manufacturing effort by our expert Workshop Team, followed by testing and review by ecological professionals, our NHBS Harp Trap was ready for production. The launch of our product into the wildlife equipment market signals the arrival of the only commercially produced harp trap in Europe. 

What is a Harp Trap? 

A harp trap provides an alternative bat survey method to mist netting or the use of bat detectors. They are particularly useful in situations where bats in flight can be channeled through a natural funnel such as above a water course, a cave or mine entrance or a clear area within a forest. 

Harp traps consist of a frame which is either freestanding or suspended, and supports two to four rows of nylon strings. The bats will fly into the nylon strands and then fall unharmed down into a collecting bag below. The catch bag is made from green cotton canvas that is water resistant and breathable and includes heavy duty clear plastic baffles to prevent the bats from escaping. Unlike mist nets, harp traps do not entangle the bats an it has been reported that they can be more effective for surveying bats, potentially capturing higher numbers of individuals. 

The NHBS Harp Trap

The new NHBS Harp Trap is a three-bank trap, meaning it has three rows of nylon line. Our trap has a catch area of approximately 4mand catch bag which is around 60cm deep.  It folds down neatly into a bespoke carry bag and weighs approximately 15kg-full specifications and dimensions are below. The trap takes two people around 10 minutes to assemble and stands on four sturdy, extendable legs and which can be arranged at the height that you need the trap to be. There is also the option to anchor the harp trap with guy ropes in windy conditions. The trap can also be adapted to be suspended if this is required. 

Our trap has a few innovative features designed to make assembly and disassembly easier. Firstly the strings are wrapped  around a winding mechanism which greatly reduces the stress and time-consuming act of sorting through tangled lines in the dark.

 

There is also an extension under the catch bag, which prevents the bats from flying underneath the trap and this doubles as protection for the component parts as it wraps around the disassembled trap when it is stored in its bag. 

Dimensions:

Catch area: 4m2 approximately
Catch area L x W: 180 x 225cm
Length: 180cm
Catch bag depth: 60cm
Catch bag width: 44cm
Weight: 15kg

Folded dimensions (in carry bag)
Height: 46cm
Length: 200cm
Width: 22cm

Operational dimensions
With legs fully retracted:
Height 314cm
Width (at base): 62cm
Length (at base): 230cm

With legs fully extended:
Height: 372cm
Width (at base): 100cm
Length (at base): 252cm

Testing 

As our harp trap evolved, prototypes were trialed and reviewed by ecology professionals; Professor Fiona Mathews of Sussex University and Neil Middleton of Batability. Their expertise and excellent feedback helped us develop our the harp trap to the point that it was now ready to go live. 

The team at NHBS have done an excellent job in coming up with a new and refreshing approach to harp trapping, which shows many innovative and useful design features.  When testing the equipment we were able to demonstrate that it was quicker/easier to assemble than competitor’s products.  We are happy to recommend this harp trap, and will be ordering one ourselves, to be used during our training courses and for bat-related research.   
Neil Middleton, BatAbility Courses & Tuition

The Law 

Harp traps can only be sold to those who are licensed to use them. If you hold such a licence, we will ask to see a copy of your NE, NRW or SNH licence when you contact us about your purchase. If you are purchasing from overseas, we will request details about your institution and research. 

NHBS Manufacturing

NHBS manufactures marine, freshwater and terrestrial survey tools, all carefully designed to meet the demands of researchers, consultants, public authorities and educators in the environment sector. Made by our team of expert engineers, fabricators and seamstresses, our products have become renowned for their quality, durability and affordability.

Find out more about our manufacturing.

Key accessories for using alongside your harp trap

The Petzl Tikka Headtorch is a high-power and easy to use headtorch that can produce a light beam with a brightness of up to 300 lumens. It is available in four colours and can be powered with either three AAA batteries (included) or using the Petzl CORE rechargeable lithium-ion battery. 

 

The Kite LED Loupe Triplet Hand Lens 10 x 21 provides crystal clear images which are enhanced with its ring of LED lights. This product may prove invaluable when trying to identify some of the tiny distinguishing features of certain bat species. 

 

The A4 Portrait Waterproof Clipboard allows you to write in the field without having to worry about the rain. A waterproof plastic covering system helps to keep your paper dry and can be closed over the clipboard with the strong velcro fastener. 

 

 

Books 

The Bats of Britain and Europe 

Paperback | Sept 2018 

 

 

 

 

The Bat Workers’ Manual 

Paperback | July 2012 

 

 

 

 

Field Guide to Bats of the Amazon 

Paperback | Feb 2018 

 

 

 

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.

 

  • 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.

 

  • 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.

 

  • 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.

 

 

 

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.

 

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.

 

Further Reading:

Badger Behaviour, Conservation and Rehabilitation: 70 Years of Getting to Know Badgers
Badger expert George E Pearce provides a fascinating insight into badger biology, life in the sett, rescue and rehabilitation, consultancy, badgers and farming and badger-watching.

 

 

Badgers
An updated edition of Michael Clark’s acclaimed study of the biology and natural history of the badger has been completely updated to include the controversy of badger culls.

 

 

 

The Badger
This new edition provides basic information on Britain’s best known member of the weasel family, covering natural history, behaviour, ecology and conservation. 

 

 

 

Biology and Conservation of Musteloids
Combines over 90 years of experience on the behaviour and ecology of wild musteloids.