Author interview with Tim Blackburn: The Jewel Box

Interwoven throughout with tales of his experiences moth trapping on his London rooftop and in the Devon countryside, The Jewel Box by Tim Blackburn introduces us to a range of ecological theories and explains some of the where, why and hows that anyone curious about the natural world might tend to ponder upon. Beautifully and engagingly written, it manages to be both an ode to both the moths themselves and the activity of moth trapping, as well as a wider ranging exploration of the relationships between humans, other species and habitats.

Professor Tim Blackburn is a scientist with thirty years of experience studying questions about the distribution, abundance and diversity of species in ecological assemblages. He is currently a Professor of Invasion Biology at University College London, where his work focuses on alien species. Before that, he was the Director of the Institute of Zoology, the research arm of the Zoological Society of London.

In this Q&A we chatted with Tim about The Jewel Box as well as about moths in the UK, the things we still have to learn about them, and the species that he’s hoping to see in the flesh.


What struck me most about your book was how you manage to write about complex ecological theories in a very accessible way, while at the same time conveying your very personal admiration and fascination for these insects. What was it that convinced you that this book in particular needed writing?

For a few years now I’d wanted to write a book that presented the natural world in the way that ecological scientists tend to think about it. There is a lot of very fine writing about nature, but most of it is more natural history than science, or is very much focused on a specific organism or location. While The Jewel Box does use moths to illuminate and illustrate the rules that we (ecological scientists) think underpin how nature works, it is very much about those rules, rather than the moths themselves. I’m very happy to hear that you thought I explained the science in an accessible way – that was my fundamental goal.

Within the UK, we have a rich history of recording and studying moths. Where do you think are the big gaps currently in the research? Are there things about moths that we still know little about?

There are still lots of gaps in our knowledge of UK moths – hardly surprising given that we have 2,500 or so species here. For some, we still don’t know their natural food plant. For others, we don’t know if they still exist here. In this latter regard, it seems incredible to me that we are still arguing about the scale of insect declines in the UK, and what the causes of those declines are. We think moth numbers have probably dropped by 30% since 1970, but that information is only available for the commoner species of larger moths, and may be biased in various ways. While we have a rich history of moth recording, and some good data for moth population changes, we could really do with more.

Why do you think it can be so addictive to observe, identify and list the species that we find, whether it’s birds, plants or moths?

I don’t know! For me, it’s pretty much a hard-wired instinct. My mother says I was pointing at birds before I could talk. I’ve been a birder all my life. More generally, there is something deeply satisfying about observing and identifying species – a series of puzzles to work out. Yet unlike most puzzles, the solution is not a product of the human mind, but something more profound. It’s the start of an exploration into understanding millions of years of evolution and ecology. I love a cryptic crossword, but identifying moths gives me so much more joy.

As someone who was trapping before, during and after the Covid restrictions, did you observe any significant differences in the numbers or species of moths that were attracted to your trap during the periods of lockdown?

I wouldn’t say I noticed obvious differences due to lockdowns, although the first lockdown period itself was a very productive one for my moth trap. That was because I was in the Devon countryside when lockdown happened, rather than my upstairs London flat. The countryside is so much better for moths (numbers of species and individuals) than the city, and that spring was notably warm and sunny, which the moths loved. The 2020 lockdown was my most intensive period of trapping to date.

We are generally well informed about planting wildflowers for pollinators such as bees and butterflies and providing food for our garden birds. But what can we do to encourage moths?

The same really! Butterflies are just showy, diurnal moths. Moths are as good pollinators as bees, and like flowers and pollen just as much. So anything you do for the butterflies and bees will likely help the moths too. You just won’t see the impact as obviously, because most of the moths are using your garden while you’re sleeping.

Are there any species that you’ve yet to trap but are on your mothing ‘bucket list’ so to speak?

In The Jewel Box, I spoke about dreaming of catching a Death’s-head Hawk-moth, one of the largest and most iconic British moth species. Last October, I opened my moth trap on Blakeney Point in Norfolk to see that that dream had come true. It’s a moment that will stay with me forever. Now, Oleander Hawk-moth– the species that inspired the book’s cover – would be the dream, albeit even less likely than catching the Death’s-head.

Finally, what’s in store for you next? Do you have plans for further books?

I’m mulling on the next book, but still enjoying all that’s new and interesting in my life as a result of publishing The Jewel Box. But watch this space…


The Jewel Box by Tim Blackburn was published by Weidenfeld & Nicolson in June 2023 and is available from nhbs.com.

Author interview: An Identification Guide to Garden Birds of Britain and North-West Europe

An Identification Guide to Garden Birds of Britain and North-West Europe is a photographic guide to 75 species of bird most commonly found in or over the gardens of Britain and North-West Europe. The text combines scientific facts with affectionate descriptions of the birds’ identifying features, including sex and age differences, habits, nest types, eggs and calls. The introduction contains tips on how to identify birds, how to look after garden birds, which species can be seen throughout the year, a glossary and anatomy details. For each species, there are two or three photographs labelled with distinguishing features where appropriate, a calendar showing the time of year when the adult can be seen and star facts that give further proof of the birds’ fascinating features.

Dominic Couzens

Dominic Couzens is an award-winning nature writer with 40 books and hundreds of published articles to his name. His best-known books include An Identification Guide to Garden Insects of Britain and North-West Europe, The Secret Lives of Garden Birds, Britain’s Mammals (WildGuides) and Save Our Species. Carl Bovis is a nature photographer with a particular passion for birds. The advent of digital photography has given him the opportunity to capture the birds he sees and share them with the world.

We were lucky enough to ask both Dominic and Carl a few questions about what inspired them to produce this guide, what the process was like to assemble it and the importance of providing habitats for birds in our gardens.


What inspired you to produce this introductory guide to garden birds?

Dominic: As a regular Twitter follower I quickly became aware of Carl’s work. What stood out for me was his wonderfully giving attitude, really helping “ordinary” people connect with birds and birdwatching with the use of clever and funny bird photos, as well as wondrous ones. He encourages everyone to get involved and to enjoy nature, and he does it in a unique way.

So from my (Dominic’s) point of view, it was a no-brainer to cooperate with Carl on an entry-level guide to garden birds, with his own special take.

This book follows on from a book on garden insects published with another first-time author, Gail Ashton, last year. In both guides we have used light-hearted introductions and mentioned star facts about each species, to helve delve into the subject’s life.

Blue tit by Carl Bovis

How did you choose which species to include in this guide?

Our subject was garden birds, and since we wanted to cover northern Europe we had a good range to choose from. Most species pick themselves, but the guide will stand or fall on what we include.

This guide is full of many wonderful and illustrative photographs. What was the process like to assemble these? Where there any species that were particularly difficult to attain clear photos of?

Carl Bovis

Carl: I’m known for taking photos of the common birds, a lot of which many serious bird photographers turn their noses up at! So a book about garden birds was perfect for me, as I have taken many photos of them over the last few years and had many to choose from. I also have a passion for catching birds in flight, the shape and angles of their wings and tail fascinate me. Obviously this is an ID book, so perched birds are essential, but we’ve included lots of flight shots too.

It’s very rewarding for me to have my photos in this guide. A couple of years ago I was talking to a serious birder at Steart Marshes and he said to me; ‘your photos of birds are very engaging, but they’d never be in a mainstream bird book’. I didn’t take offence, I like that many of my photos are different to the norm, but at the same time, I’m happy now to have proved him wrong!

It’s also an honour to collaborate with Dominic on this, as before I even knew him personally, I had bought and enjoyed many of his previous books, and had attended one of his fascinating talks on bird behaviour. He is nature-writing ‘royalty’ as far as I’m concerned.

The shy and rarer garden birds were obviously toughest to get clear photos of, especially ones that don’t visit my own little Somerset garden where many of the photos were taken. So birds like Bullfinch, Treecreeper and Redstart were a challenge. If you get them in your garden, consider yourself lucky!

Included with this interview are a few of my favourite photos from the book.

Given the many pressures facing our garden birds, are there any species in this guide that you think won’t be so common in coming years?

Dominic: We have included a number that are declining, such as Marsh and Willow Tits, Chaffinches and Greenfinches. The Lesser Spotted Woodpecker is in serious trouble, and both House Martins and Swifts are on the wane. There are others, too.

Swift by Carl Bovis

But I do think it’s very important to let people just discover and enjoy birds. I hope the book inspires first and foremost.

This guide includes a section on looking after garden birds, giving tips as to how people with gardens can help. How important is it that people make their gardens into good habitats for birds?

Dominic: Gardens are incredibly important for two reasons. They are the best place for people and birds to meet, and for people to get excited about birds and love them.

Secondly, gardens are where everybody can be a conservationist. The overall fortunes of birds and other wildlife often feel as though they are outside our control, but in gardens we can make decisions that directly affect wildlife. If enough people realised how important their backyard decisions were to wildlife, they might be inspired to do more.

House sparrow by Carl Bovis

Are there any plans to continue this series and, if so, which other species groups that you would like to make an identification guide about?

Dominic: Yes, a book on Trees is already well in production. Any others in the series may require us to get John Beaufoy, our publisher, drunk so that we can persuade him to do some more.


An Identification Guide to Garden Birds of Britain and North-West Europe by Dominic Couzens and Carl Bovis is published by John Beaufoy Publishing in June 2023 and is available from nhbs.com.

Author interview with C. Philip Wheater and Helen Read: Animals Under Logs and Stones

Logs, stones and the like provide an interesting interface between the damp depths of the soil and the drier open ground surface, offering refuges for a fascinating array of animals. The communities of organisms that live beneath them are little noticed and even less studied, yet the potential for ecological work here is great. Animals Under Logs and Stones is number 22 in the popular Naturalists’ Handbook series and is a greatly expanded and updated version of the first edition which was published 27 years ago. It provides comprehensive information about these unique habitats and includes a range of easy-to-use and illustrated identification keys to help both amateur and experienced naturalists identify their findings.

Philip Wheater is Professor Emeritus of the School of Science and the Environment, at Manchester Metropolitan University. His interests include ecology and management of human-influenced environments, especially urban systems; invertebrate conservation and management; access to, provision and assessment of environmental education; environmental monitoring, especially fieldwork and the use of statistics.

Helen Read is a Conservation Officer for the City of London Corporation based at Burnham Beeches, a post held for over 30 years. She has written numerous books and papers on a variety of subjects, the majority being on the management of veteran trees and topics relating to invertebrates. She has also been an active committee member in various invertebrate societies.

With the upcoming publication of Animals Under Logs and Stones, we were fortunate to chat with Philip and Helen about the book and about the importance of these unique habitats in supporting a range of invertebrates and larger animals through various stages of their life histories.


The first edition of Animals Under Logs and Stones was published 27 years ago. What inspired you to write the second edition, and what do you think are the key things that have changed during this time in terms of our knowledge and research techniques?

There have been many changes in taxonomy over the last few decades, not least because of major advances due to the use of molecular techniques more recently. Also, more information is now available on the distribution of many species that are found under logs and stones. Because of increased interest in many of the groups found under logs and stones, it is now possible to expand the range of the book from the original 17 identification keys to 25 in the new edition. With modern publishing techniques we are now able to include many photographs to illustrate both the species and habitats covered by the book.

What benefits do the cryptozoan communities living under logs and stones bestow on their surrounding ecosystems?

Soil and leaf litter dwelling communities are important in decomposition, nutrient cycling, and soil formation and maintenance. In addition to logs and stones being microhabitats where some species live, others that can be found in soil and leaf litter use them as refuges. And it is possible to find many of these animals more easily than it would be by searching within the soil and leaf litter layers.

As children we’re fascinated by turning over rocks and seeing what’s underneath. Then, for the most part, we grow up and become increasingly distracted by other pursuits. Why do you think it is important that we value these often-overlooked microhabitats and ensure that they are explored and studied.

Even though many of the animals found under logs and stones are rather small and may not be quite as showy as butterflies or dragonflies, they are fascinating in their own right. Many of these animals may be found at times of the year when other invertebrates (especially flying insects) are not present. They are also not restricted to special sites; a wide range of species can be found in anyone’s back garden and observed without the need for specialist equipment. In addition, their ecology and life histories are generally less well known to the general public and can be very interesting to study.

In our modern world where there is often the pressure to make everything social media-worthy and aesthetically pleasing, it is easy to become obsessed with tidiness, both in our gardens and in other wild spaces. How important do you think it is that management strategies recognise the benefits of dead wood and stones which might otherwise be seen as unnecessary debris?

Leaving logs and stones in situ is increasingly acknowledged as being important to provide a wider range of refuges for animals. These days this is even the case in quite formal parks and gardens. There is a wider understanding of the reasons for more natural approaches to the management for wildlife. Similar initiatives such as No Mow May are spreading the concept of naturalistic management to a wider audience. Environmental interpretation and education will be key to continuing to spread this message.

As with all the fantastic Naturalists’ Handbooks you provide lots of information on designing and undertaking research projects as well as analysing and presenting the final data. For any enthusiastic naturalists who are not currently in education or working in a research environment, is it still of benefit for them to record their findings? And how could their records add to the general body of knowledge about these animals and habitats?

All well thought out studies can provide useful and interesting information, especially where there is little current knowledge about particular species and their natural history. Anyone can contribute records through apps such as iRecord and iNaturalist. Even information about relatively common species can be useful in looking at changes in distribution due to environmental change such as climate change. Those with a particular interest in a specific group of species can find like-minded people who organise field days, collate information and publish (often on-line) records and ecological information. Often species recording schemes or wildlife trusts are a good place to start. Our book lists many places where people can get more information about such groups.

Finally, what’s next for both of you? Any more books in the pipeline?

We are currently working together again on a book, to be published by Pelagic, on the ecology and management of Burnham Beeches which is a National Nature Reserve and a Special Area of Conservation in South Bucks. This will cover the range of plants and animals found at this important nature reserve, together with background on the history and management of an area that was set up as one of the first “green lungs” of London to provide a public open space. Helen is also finishing an update to the Synopsis of the British Fauna on millipedes for the Linnean Society with her colleague, Paul Lee.


Animals Under Logs and Stones by C. Philip Wheater, Helen J. Read and Charlotte E. Wheater is published by Pelagic Publishing in July 2023 and is available from nhbs.com.

This Week in Biodiversity News – 19th June 2023

Research

A new report has shown that numbers of grassland butterflies across Europe declined by 36% between 2010-2020. The results have huge implications for wildlife, as butterflies are good indicators of other insects, which are vital for ecosystems to function properly. The decline in these species put the future of vital habitats, such as wildflower meadows, in peril.

Research has found that trees have been growing at record-breaking heights in Scotland’s mountains. The research, led by the University of Stirling, showed that a rowan is growing at 1,150m, near the top of Sgurr nan Ceathreamhnan, and a sitka spruce growing at 1,125m on Braeriach. In total, the research found 11 new altitudinal records for tree species in Britain.

Climate crisis

Fears of hottest year on record as global temperatures spike. Preliminary global average temperatures taken so far in June are nearly 1?C above previously recorded June levels since 1979. It is thought that the gathering El Niño event may propel 2023 into becoming the hottest year ever recorded. This naturally recurring phenomenon will likely add heat to the long-term warming conditions already caused by the burning of fossil fuels.

An ‘unheard of’ marine heatwave is currently occurring off the coasts of the UK and Ireland, posing a serious threat to marine species. Sea temperatures are several degrees above normal, with global sea surface temperatures in April and May reaching an all-time high for those months according to records dating back to 1850. Scientists believe that continued high temperatures over the summer could trigger mass mortality in fish and oysters.

Conservation

Devon’s Wildlife Trust (DWT) is planting a temperate rainforest near Totnes with its share of a £38 million Aviva fund. The 30-hectare site has a 105-year lease, which will allow DWT to plant two-thirds of the land with native tree species. Rainforests of the British Isles have been largely destroyed over hundreds of years, now covering less than 1% of Britain. DWT will create new rainforest close to existing examples of the ancient, wooded landscapes in the Dart Valley and on the southern edges of Dartmoor.

Rare hazel dormice will be reintroduced into the National Forest near Calke Abbey in Derbyshire. This native species has seen a 51% decline nationally since 2000 and is locally extinct in the area. People’s Trust for Endangered Species (PTES), which will release 38 individuals, is working as part of Natural England’s Species Recovery Programme. Since 1993, 1,078 dormice have been reintroduced to 25 different woodlands in 13 countries.

Around 20 captive-bred wildcats are being released in secret locations across the Scottish Highlands. The animals were raised in captivity as part of a breeding programme run by the Royal Zoological Society of Scotland, which aims to release up to 60 individuals over the next three years. Scottish wildcats are functionally extinct in the wild in the UK, therefore it is hoped that these reintroductions will help to save the species.

Extinction risk

Campaigners fear that East West Rail will lead to the loss of rare species. A new route between Bedford and Cambridge has been confirmed, with the spokesman for the line saying that chosen route would offer an “environmentally sustainable solution”. However, local campaigners believe the scheme could threaten Red List species, such as skylarks and yellowhammers. They believe an ancient woodland which provides habitats and a local wildlife corridor will be dramatically impacted by the route. The company has committed to a 10% net biodiversity gain target across the whole project, however, and has already established 20 ecological compensation sites across the first stage.

A new study is warning that the mass “sixth extinction” is well underway, with nearly half of the world’s animal species now in danger of becoming extinct. The study, More Losers than Winners, examined global population trends from approximately 71,000 animal species. They aimed to determine how many are at risk due to threats such as loss of habitat, harmful use of pesticides and herbicides, and the long-term impact of the climate crisis. The researchers found that only 3% of animal species were growing, while 49% showed stagnant population growth. 48% showed declining populations.

New discoveries

A new flying gecko species has been discovered in northern India. The Mizoram parachute gecko is one of 14 geckos known to take to the air, using a combination of skin flaps and webbed feet. The researchers hope that this new discovery will highlight the underappreciated biodiversity of northern India and encourage greater efforts to document its wildlife.

The bones of an extinct giant shingleback skink have been discovered in Australia. The research found that Tiliqua frangens roamed Australia during the Pleistocene, around 2 million years ago, before they went extinct 47,000 years ago.  The species was 1000 times bigger than the Australian common garden skink.

Author Interview with Mike Pienkowski: When the Kite Builds

When the Kite Builds…: Why and How We Restored Red Kites Across Britain is an informative and comprehensive examination of the project to reintroduce red kites to England and Scotland. Mike Pienkowski, the chairmen of this project, describes why the decision was taken and how it was implemented, as well as examining the success of the experiment and exploring the outcomes from this success. Chapters cover how nestlings were collected and imported, how the kites were reared, the initial survival after release, education and public awareness, and much more.

Mike Pienkowski

Below is our interview with Mike Pienkowski, where we discuss how he became involved in this project, whether population recovery would have been possible without reintroduction, how the increase in red kites has impacted or enhanced the British countryside, and more. When the Kite Builds… was published in February 2023.

Dr Mike Pienkowski will be signing copies of his book at the NHBS stand, number S107, in Swallow Marquee at Global Birdfair on Saturday 15th of July between 2–3pm.


When the Kite Builds… is a comprehensive overview and analysis of the project to restore red kites to Britain. How did you become involved in this project and why did you decide to write this book?

From the mid-1980s, I was Head of Ornithology at the Nature Conservancy Council (then the UK Government conservation agency). NCC was struggling to implement legislation which it had not drafted, and which tended to give the false impression that conservationists were always negative to others. Among a review of all the projects we needed to meet bird conservation needs, I wanted to include something clearly positive and cooperative. There were at the time three globally threatened bird species which occurred in Britain. One was red kite, whose range was now restricted to Europe, and declining across most of it. Red kites had been common across Britain in the Middle Ages, and valued as the recycling agents of the time, clearing bodies from city and countryside, but had later been exterminated from England, Scotland and Ireland, with just a tiny isolated and interbred population surviving in central Wales involving intense protection. Could we restore red kites across Britain? Colleagues in RSPB had been thinking along similar lines, and we formed a joint project team, which I chaired. From 1984, we researched all aspects and began an experimental introduction in 1989. When this proved successful by 1995, we encouraged others to use our methods in other appropriate locations across the country.

I wanted to document the process, the full story of what one reviewer described as “a mixture of science, politics and luck” – especially as there have been few books addressing all aspects of science-based conservation projects. I had started the book in the mid-1990s – but various things intervened. I went back to it a couple of times and finished it during lockdown. It is actually a much better book now than it would have been 25 years ago, both because we can see the real outcomes and I can be more open now than would have been possible then.

Fully grown kites ready for release. Image credit: Dr Mike Pienkowski

Chapter 10 discusses education and public awareness, especially among landowners and gamekeepers. Do you believe that population recovery would have been possible without reintroduction through extensive campaigns to educate the public to reduce persecution and increase suitable habitats or was the existing population too small to be viable?

I think that the two elements worked together. In fact, we planned in the hope that they would. Although we considered that, in much of the country, illegal persecution was much reduced, making releases viable, we knew that this was not the case everywhere and, especially when the young kites dispersed, that we would probably lose a few to this vile activity (which by far the majority of land-owners and game-keepers deplore). We found that the public were horrified by deaths from such causes, particularly of birds imported to correct previous human errors. We are grateful to the public, police and public health authorities for securing several successful prosecutions. These and the campaigns did lead to a reduction in such activity. This has allowed not only red kites but also other species, such as buzzard and raven, to repopulate some of their former ranges.

There have been reports that the illegal killings of birds of prey have been surging across the UK in recent years. Has this affected the red kite populations, and do you think it will impact the success of any other bird of prey species’ reintroductions?

Despite the overall positive trend in decent decades, illegal killings have continued, particularly in certain regions of the country, particularly those with many moorland shooting estates. Whilst most estates are probably law-abiding, it does not take many to devastate a bird of prey population. This is not limited to reintroduction projects but applies strongly to some species, such as the hen harrier, which would be doing so much better without this activity. In the same areas that hen harriers suffer, individuals of other species, including red kite and buzzard, do not survive long. Such higher mortality is why the red kites released in the Black Isle in the north of Scotland increased in population size at a much slower rate than did those in the Chilterns in the same experimental phase of the project. Despite these problems, red kites in the UK now account for well over 10% of the world population. Hen harriers suffer because they are more restricted in habitat than red kites, and this habitat is the centre of most remaining illegal persecution.

Kite nestling being placed in a travel box in Spain. Image credit: Dr Eric Bignal

How has the increase in red kite populations across Britain impacted or enhanced the countryside?

I may be biased, but I see that most people seem to agree that it is an enhancement. The fact that the red kites increased at a rate at the upper limit of our models shows how well they still fit in, after their absence of over 100 years. In general, it does not seem to be at the cost of other species, The nearest in ecology to them, buzzards, have been spreading as well, as I mentioned earlier. In a few urban areas, there have been complaints about kites diving at people. However, it seems that this has occurred only in certain town areas where some people have ignored our advice not to provide food. This leads to a range of problems for the kites and other humans. Overall, people seem to be delighted to experience such beautifully coloured birds of prey, with their amazing aerobatic ability, due to their huge wing area but relatively small, light bodies.

Kite flying free from rearing cage. Image credit: Dr Mike Pienkowski

Chapter 12 discusses the reintroductions and recovery programmes of other species of wildlife. Are there any species that you hope will be reintroduced to the UK soon?

There is not a one-size-fits-all solution; each species needs individual study, assessment and outreach. I think that beavers have largely proved the case for themselves (with a little help from open-minded humans), and a human-led exercise for white storks seems very promising. I think that the cases are strong for pine marten (especially if, like me, one would like to see the range of red squirrels restored) and for lynx (a medium-sized cat very shy of humans, which might help address the problems that the over-population of deer pose to tree saplings). As the book indicates, there are others waiting in line, once we build further confidence with these. Britain’s wildlife populations are hugely depleted due to human actions, and we now have the methods to bring some back, if we have the will.

What do you believe are the key barriers to successful reintroductions and species restorations in the UK? How have these changed since the red kite restoration began?

Kite boxes on a plane. Image credit: Dr Mike Pienkowski

The red kite restoration faced the problem in attitude that many people thought that such things could not be done, and certainly not in densely populated south-eastern England. That is now overcome. However, we must always start from the objective: reintroduction is one of a range of methods that can be deployed. It is best (and least expensive!) not to lose species in the first place. But we are still doing so, whether it be hen harriers or breeding waders (just staying in the world of birds). We need to reverse the serious habitat changes, such as excessive drainage or illegal persecution, as immediate priorities. Even for those species lost to Britain (or elsewhere) and which we wish to reintroduce, before doing so, we need to ensure that there is suitable habitat. The book gives examples of where habitat needed restoration first. One also needs to meet other internationally agreed criteria including avoiding threat to the source population.

Do you have any future projects that you can tell us about?

Most of my work nowadays is as the honorary Chairman of the charity UK Overseas Territories Conservation Forum. Britain is internationally important for wildlife, but its Overseas Territories (UKOTs) are even more so. However, these are small places, with small human populations and small economies – so they are hugely underfunded. In fact, all proceeds from the sale of ‘When the Kite Builds…‘ are going in support of this charity’s work. UKOTCF encourages others to undertake conservation work in support of UKOTs, such as the marine protected zones of Pitcairn, Tristan da Cunha, Ascension and St Helena, and the restoration of South Georgia and Ascension. UKOTCF’s in-house projects, always with local partners, include both liaison work across UKOTs and projects with individual territories, such as our current project in Montserrat, ‘Adopt a Home for Wildlife’, empowering local residents and communities to take a lead in managing areas to support conservation.


When the Kite Builds…: Why and How We Restored Red Kites Across Britain was published by UK Overseas Territories Conservation Forum in February 2023 and is available from nhbs.com

The Summer 2023 issue of Conservation Land Management

Soon to hit our readers’ doormats, the Summer 2023 issue of Conservation Land Management (CLM) is filled with a mix of informative and practical articles. Excitingly, this issue delves into the marine world with a look at seagrass restoration approaches in southern England. Other articles include river restoration in the Ullswater Valley in Cumbria, the management of problem umbellifers and the conservation of the European Turtle Dove. Read a summary of the articles and other features in this issue below.

Seagrass seed harvesting by Esther Farrant

More than 90% of the UK’s seagrass has been lost over the past few centuries, driven by disease, pollution and physical damage to the seabed caused by trawling and other fishing methods. To halt and reverse this trend, several projects during recent years have sought to restore seagrass meadows where they are no longer present. One of these, supported by the ReMEDIES partnership, is focusing on five Special Areas of Conservation (SACs): Isles of Scilly Complex, Essex Estuaries, Fal and Helford, Plymouth Sound and Estuaries, and Solent Maritime. The Ocean Conservation Trust is leading the work in Plymouth Sound and Solent Maritime, and in this article, Esther Farrant details the various methods being trialled to cultivate and plant seagrass seeds and seedlings to restore seagrass meadows in southern England. In addition to planting, one other important aspect of seagrass recovery is to prevent further damage to existing seagrass meadows, and so Advanced Mooring Systems (AMS) have been designed as an alternative to traditional swing moorings, the chains of which can drag along the seafloor – Esther describes the design and installation of AMS in Plymouth Sound and Solent Maritime and explains why these are a less damaging option.

Hogweed by Max Wade

There are around 70 umbellifer species, both native and non-native, in the UK. A family of mostly herbaceous plants, umbellifers provide many benefits for wildlife, particularly invertebrates, but some species can pose a risk to people and livestock in certain situations. Robert Mitchell and Max Wade highlight the most troublesome species – such as Giant Hogweed and Hemlock – that land managers should be aware of, and describe their identification and the problems that these plants can cause, including biodiversity loss and phytophotodermatitis, which commonly appears as ‘strimmer’s rash’. The authors also cover the different treatment options available to manage these plants, and provide examples of control programmes that dealt with different species of umbellifers that posed a risk at two different sites.

Adult Turtle Dove drinking from a pond by John Buckingham

The European Turtle Dove has experienced a dramatic decline in the UK and elsewhere in Europe, leading to the launch in 2018 of the International Species Action Plan for the Turtle Dove. This identified four conservation objectives: maintain and increase good quality breeding habitat, eradicate illegal killing in Europe, ensure that hunting levels do not exceed sustainable levels, and maintain and increase good quality habitats at migratory stopover sites and wintering grounds. Operation Turtle Dove, a partnership between the RSPB, Pensthorpe Conservation Trust and Natural England, works with landowners and farmers to deliver suitable feeding and nesting habitats for the Turtle Dove in the UK. In this article, Rick Bayne, Guy Anderson and Jos Ashpole describe the actions landowners can take to achieve this aim, including sowing bespoke seed mixtures as supplementary feed, providing an accessible drinking source and maintaining a dense vegetation structure for suitable breeding habitats.

Goldrill Beck, Ullswater, post-restoration by Jonathan Holdsworth

Rivers as we know them in the UK are the result of modification by humans over time. Images of neat and straightened single-thread channels are usually what spring to mind, but, if left untamed, rivers would naturally consist of multiple channels weaving their way through wet woodlands and floodplains. Restoring rivers to achieve this more dynamic system can sometimes be met with hesitation by landowners, however, especially when the end result is uncertain. Riverlands, a partnership between the National Trust and the Environment Agency, has delivered two large-scale restoration projects in the Ullswater Valley in Cumbria keeping the sensitivity of the farmed landscape in mind, and in this article Rebecca Powell explains the approaches used in both of these projects and what the impact has been on the river habitats post-restoration.

In response to the articles on weir and dam removal from rivers and the restoration of ghost ponds in the Spring 2023 issue, Review includes a letter from one of our readers offering an insight into the cultural value of these features and the risk of damaging a registered heritage asset. In this and every issue you can also expect to see Briefing, keeping you up to date with the latest training courses, events and publications, and On the ground which provides helpful tips or updates on products relevant to land management.

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

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

 

National Marine and Coastal Wildlife Code

The first national Marine and Coastal Wildlife Code has been launched in England, which will protect animals and habitats by helping people enjoy the coast responsibly. England’s coastline contains vitally important habitats, including sand dunes, saltmarshes and a significant proportion of Europe’s vegetated shingle beaches. The coastline also supports a number of key species, such as 95% of Europe’s grey seal population and 25% of Europe’s breeding seabirds.

This builds on the existing Countryside Code but only applies to England. Scotland, Ireland and Wales have previously produced similar coastal and marine wildlife codes and guidance, which should be reviewed if you are looking to visit these areas.

If a seal is looking at you, you are causing a disturbance. Image by Simon Palmer
What does the code include?

Similarly to the Countryside Code, this new code aims to act as a guide to help visitors act responsibly around marine wildlife. We all have a responsibility to protect our local wildlife. The guidance from the UK government for England is:

1. Be aware of how you could cause a disturbance

Many people may not realise the impact disturbing wildlife can have, but if an animal is repeatedly disturbed, it can lead to stress, injury and even death. You can also displace animals from their preferred habitat, disrupting behaviours such as migration, breeding, feeding and resting. This disturbance can also increase their vulnerability to predators.

The impact of disturbance on seals has been brought to the public’s attention in recent years, with many organisations calling for people to be aware of the damage caused. Disturbances that force seals to flee from haul-out sites into the sea can result in them struggling to put on or maintain weight and unable to properly feed their pups. Seals can also receive injuries such as gashes from sharp rocks or even broken ribs, which can be difficult for a diving species to heal from. Increased vigilance also wastes energy and can reduce the amount of time spent feeding or resting. This increased energy expenditure can increase stress as well as the seal’s vulnerability to disease, reducing overall fitness and increasing mortality rates.

You can disturb wildlife by approaching or touching an animal; crowding, circling, separating or chasing them; feeding them; making noise; or damaging or altering habitats. This can include disturbance by dogs, therefore pets should be kept on a lead or under effective control when at the coast. An easy way to reduce your impact is to remember that if an animal has repeatedly noticed you, you have caused a disturbance and it is best to move away and take a wider berth.

Kayakers straying too close to seals. Image by Simon Palmer

2. Know when wildlife are most vulnerable

There are certain times when animals are particularly vulnerable, such as during breeding seasons, in winter and when they’re resting or moulting. It can be difficult to know when these times are, as they often differ between different species. Therefore, it is important to check signs in local areas, as they should tell you where there are access restrictions, and to research the wildlife in the area you are heading. Local councils, Wildlife Trusts and local harbours or ports may be able to provide you with this information.

For seabirds, ‘bird nesting season’ is officially from February until September, therefore it is important to consider access restrictions, dog activities and the impact you may be having on an area during this time. Certain species, such as ringed plovers and oystercatchers, lay their eggs on open ground such as beaches, with little to no surounding vegetation, and so these eggs are vulnerable to being stepped on. Local councils may put up signs in areas where these species are known to breed to discourage visitors but caution should be taken on any beach.

Ringed Plover nest by Philip McErlean via Flickr

Breeding and pupping season for grey seals can start as early as June in the UK, lasting until January. Pups are particularly vulnerable to human disturbances as this can cause a seperation between the mother and pup or interrupt lactation, potentially leading to pup abandonment. Due to their heavy white coat, grey seal pups can’t swim during their first few weeks and will be left on beaches while their mothers hunt. If disturbed, they are therefore unable to swim away. Addtionally, disturbances that cause stampeeds during pupping season can increase pup mortality rates. You should never approach a seal pup and if you suspect one has been abandoned or is in need of attention, you should keep your distance and call for help.

Other important breeding periods are March to September for seahorses and summer months for cetaceans. Additionally, the September to March wintering season is important for many birds, as they use this time to conserve energy and build up reserves, often for long migrations. Disturbance during this time can reduce their likelihood of survive winter or these migrations.

3. Recognise when you are causing a disturbance

Many people do not have negative intentions and simply wish to appreciate and experience the wonderful wildlife we have along out coastlines. But it is important to recognise the signs for when animals are becoming uncomfortable with your presence.

There are a number of behaviours you can look out for that will indicate a disturbance. For birds, this includes moving away from you, in flight or by walking; flapping their wings at you; and attacking. Seals are more likely to look directly at you, move suddenly from a restful position, suddenly dive into the water, or swim away from you. Cetaceans such as dolphins and whales will slap the water with their flippers or tail, dive away from you, or group together. Other species such as sharks, skates, rays, turtles or seahorses will swim away if disturbed and should not be followed.

If a seal is looking at you, you are causing a disturbance. Image by Simon Palmer

4. Act responsibly

This is the main aim of this code, to encourage people to use common sense and act responsibly. As a rule of thumb, try to stay at least 100 metres away from any wildlife and try not to approach animals from behind or head-on. If you notice any signs of disturbance, you should immediately and calmly move further away.

You should never chase, follow or harass any wildlife. It is important to not feed or touch wildlife either, as you could unintentially be causing serious harm. Other actions such as creating loud noises and using flash photography should be avoided.

5. Use watercraft responsibly

Crafts like boats and jetskis can be a disturbance to wildlife as they can injure animals and create noise both above and below the water. You should slow down to under 6 knots if you notice an animal, stay at least 100 metres away (further if you notice that you are causing a disturbance), and keep even more distance if there are more than two watercrafts nearby. You should also maintain your engine to reduce noise and make sure to launch or moor your craft correctly.

Image by Simon Palmer

6. Enjoy water activities without harming wildlife

It is important to take care not to disturb wildlife when you enter or exit the sea, therefore you should avoid doing this through sensitive habitats, including saltmarshes, mudflats, maerl beds, seagrass meadows and areas where marine wildlife are resting, breeding, nesting or feeding.

7. Report wildlife crime

If you see someone intentionally or recklessly harassing, injuring, disturbing, taking or killing an animal or damaging their habitat, you should report it. Call 101 to report an incident that has already happened, or 999 for a crime in action. Certain actions can incur fines of up to £5,000.

8. Report an injured, distressed or dead animal

If you see an animal in distress or dead, you should not approach or touch it, but report the incident by calling either the British Divers Marine Life Rescue hotline or the RSPCA.

Why is this code needed?

Our coastline and marine life are under serious pressures from a variety of threats, including climate change, disease, habitat loss, reduced food availability (usually due to overfishing), pollution and human activity, all of which already negatively impact marine wildlife. Repeated disturbances can combine with these other pressures, causing reduced fitness and increasing mortality rates.

Image by Simon Palmer
Is this effective guidance?

This code was developed in collaboration with a number of wildlife organisations, including the RSPB, Shark Trust, Whale and Dolphin Conservation and the Cornwall Seal Group Research Trust. It is not a law or regulation but does help to raise awareness of the impacts you can have on coastal and marine wildlife, while also offering practical guidance to minimise or even eliminate these impacts. While this is unlikely to prevent those with negative intentions, it does provide a great basis to help educate the vast majority of the public on how to be responsibe around wildlife. With reported disturbance incidents more than tripling in Cornwall alone since 2014, and with the ongoing work to establish the King Charles III England Coast Path (a 2,700 mile waymarked coastal path), this new code is a welcome step towards reducing and preventing incidents.

References

Defra. 2023. Marine and coastal wildlife code: advice for visitors.

 

This Week in Biodiversity News – 7th June 2023

Research

A whale shark was observed feeding at the seabed for the first time. This species usually filter-feeds on plankton at the sea surface; this unusual behaviour was filmed by an ecotourism guide. A new study, published in May 2023, proposes that whale sharks actively feed on benthic prey, either in deep water environments or where the abundance of this prey exceeds that of planktonic food sources.

Whale shark filter feeding at the surface. Image by Daniel Gillaspia via Flickr

Irish geneticists have discovered how some species may have been able to survive a mass extinction. Scientists at Trinity College Dublin unearthed a ‘dramatic evolutionary event’ in sturgeon and paddlefish populations. The species’ entire genetic makeup was ‘copied and pasted’ so that it had twice the genetic material it had before, providing more opportunities for mutations and evolution to occur. By strengthening their genetic mix, they might have been able to facilitate their re-establishment after a major mass extinction 200 million years ago.

Pollution

The River Wye has had its health status downgraded after a wildlife review by Natural England. The status changed from “unfavourable-improving” to “unfavourable-declining”, meaning that the river’s condition is worsening. The assessment showed that the river has experienced declines in certain key species, including Atlantic salmon and white-clawed crayfish. Previous studies linked this decline in condition to intensive chicken farming on the catchment.

River Wye, Hay-on-Wye by Ed Webster via Flickr
Conservation

The population of white-bellied heron in Bhutan continues to grow. Across 14 habitats, 27 individuals were recorded this year, four more than last year. This critically endangered species has fewer than 60 individuals worldwide and is found only in the Himalayan region in Bhutan, north-east India and Myanmar. As this is a top predator, its presence indicates a healthy ecosystem. Threats to this species and its habitat include fishing, local activities, natural resource extraction, development, ecotourism and timber and firewood.

Extinction risk

The crested myna, endemic to Taiwan, is now threatened by invasive myna species. The foreign crested myna and the Javan myna species are more adaptable and are out-competing the rare, native crested myna, reducing habitat availability. Less than 1,000 Taiwanese crested myna are left in the wild.

New discoveries

A species of butterfly, thought to have been extinct in Britain for almost a hundred years, has been spotted in the countryside outside London. Officially becoming extinct in Britain in 1925, a small number of black-veined whites were seen in south-east London recently, thought by Butterfly Conservation to have been released, rather than returning through natural routes.

Black-veined whites by gailhampshire via Flickr
Policy

The oak processionary moth, an invasive species, is thought to be spreading across south-east England. The government has introduced new legislation which aims to control the movement of oak trees in south-east England due to this rise in moth numbers. The toxic moths feed on the leaves of oak trees, affecting the health of oak trees by weakening them, making them more vulnerable to pests, diseases and drought.

Australian Federal and Queensland governments have promised to ban gillnets from the Great Barrier Reef by mid-2027. This fishing practice is harmful to multiple marine species, including dugongs, dolphins, turtles and some sharks. More than A$160 million in funding has been announced to reduce high-risk fishing activities around the area.

Farmers are warning that England’s hedgerows are under threat from funding cuts. The transition to post-Brexit farming payments may mean that schemes to protect hedgerows could be lost. These habitats are vital for a number of species, including mammals, birds and pollinating insects, as they provide both food and shelter. The EU paid farmers under its subsidy scheme to keep hedgerows on their land, but they had to meet certain standards such as not ploughing to the base of hedgerows; not using fertilisers or pesticides within two metres of them; and not cutting hedgerows between 1st March and 31st August without good cause due to nesting birds. The government is ending these requirements by the end of the year.

In the Field – Hawke Endurance ED Marine Binoculars 7 x 50

Introduction. 

Choosing the right binoculars for either your hobby or work is something you should spend time on. While using binoculars on dry land sometimes has challenges with poor weather conditions, if you then wish to use a pair of optics out at sea, you should consider some additional points. 

Wind, changing light conditions and weight are amongst the deciding factors on what makes a good pair of optics but add variable movement and changing landscapes to the list of elements to assess a pair of binoculars and you need to review your selection even more carefully. I’m very lucky to be able to have access to a boat for cetacean spotting and surveying. With that in mind, I decided to put the Hawke Maritime 7 x 50 binoculars through a test. But one thing that always makes it a challenge is the sea state, coupled with fast-changing light and weather conditions. Many of the points outlined below still form part of the normal considerations for use on land, but I’ve tried to extend the thoughts to the case of ‘at sea’. 

What to look for in a pair of marine binoculars? 

Crisp image 

I have found that some binoculars are let down, not by the amount of light going through the lens elements, but by the overall quality of the image. While a bright image is important, chromatic aberrations can cause issues with the identification of surface or flying objects, especially when they are near the edge of the field of view. When the sea state is above 1 (calm or glass-like), there is more movement in the wave height and the amount of time you have to determine the object on the far side of the wave is reduced. Is it a bird, or a dorsal fin? At certain times of the year, it becomes even more of a challenge when you have adult guillemots on the surface of the water with their black and white bodies that can look like the dorsal fins of cetaceans.  

This is also important with the large field of view. Maritime binoculars are all about the amount of vision you have. If you are a skipper on a boat and need to make decisions that affect the safety of your vessel, then seeing more of what is at a distance from you is critical. The choice of a BaK-4 Roof prism also plays into the quality of the image as this design of prism is reserved for higher-end products, and it shows with the quality of the image. 

Brightness 

The overall brightness of the image in all weather conditions is a big help. Timed survey periods for cetaceans rely on the confidence of the surveyor in deciding what they have seen. Whether the light is behind you or in front, the subject brightness needs to be enough to see markings, details of any dorsal fin damage (nicks, cuts), and for the assessment of age. Typically, the youngest calf will have fetal folds on its body, and a bright image will assist in making out those factors to allow assessment of age as they lose these folds after about six months. The Hawke Endurance ED Marine binoculars come in two sizes of front element, the larger giving a brighter image, but at the cost of weight (see below) with the larger binoculars being over 50 per cent heavier than the smaller version. I tested the 7 x 50 version which did not disappoint in brightness and, in my opinion, worth the cost in weight. 

Wide field of view 

The difference between the two main pairs of binoculars in the range from Hawke is dictated by size. The smaller version (not tested) is lighter in weight and contains a smaller front element (less brightness compared with their larger version) but with a greater field of view. This may be part of your decision for the selection as it is worth remembering that the amount of extra view may not be as much as you first thought. A useful tip to remember is that one degree of field of view equates to about 17.5 meters at a distance of 1000 meters. So the difference between the two versions of the maritime product is just under 23 meters of view!  

Waterproof 

The binoculars have been rated IP67. Technically they are waterproof and can be immersed in water for a short period of time without any problems. Hawke have given consideration to this by adding a set of float-assisted neck straps. Coloured bright yellow, it makes it easy to spot should you accidentally drop them over the side of the boat. The strap will keep them afloat. Needless to say, I didn’t test this benefit! It is also worth keeping a cloth with you for wiping away the salt water as, no matter how durable a pair of binoculars can be, sea spray will eventually damage the product. 

Weight 

The 7 x 50 binoculars compared with many others are no heavier than the average. However, my view on weight is reflected by the circumstances of use. If you intend to use them on a boat, and the conditions are less than calm, then holding them with one hand while using your other hand for stability is a great test. Long periods of time holding them in one hand can start to strain the wrist. Using the neck strap is important. 

Conclusion

I found the 7 x 50 binoculars to be a joy to use. Overall, the specifications have been well thought through, and provide the majority of what you would need to survey. They even produce a version with a compass built in, which I can imagine would be a further benefit for recording the sighting direction when surveying. They are comfortable to hold and generate a bright image, making it easy to identify the subject matter. It should also be noted that Hawke provide a lifetime warranty on product defects, which I feel is an outstanding part of the manufacturer’s services. 


The Hawke Endurance ED Marine Binoculars can be found here. Our full range of Hawke Optics binoculars can be found here.

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

Author interview with Jennifer Ackerman: What an Owl Knows

In What an Owl Knows, Jennifer Ackerman provides us with a magical and captivating glimpse into the lives of owls. Covering all aspects of their biology, ecology and evolution, the book takes us on a wonderful journey into their lives and those of the people who study them. Through her prose, facts and stories, we discover just why it is that these birds have been enthralling humans for so long, and why they are so intricately interwoven into our culture, art and language.

Jennifer Ackerman is an award-winning writer who wrote for National Geographic for seven years and has written extensively for many publications, including the New York Times, Wall Street Journal, Scientific American and Smithsonian Magazine. She is well known for her ornithology books including The Bird Way and The Genius of Birds, both of which celebrate the brilliance of birds through the light of new and continuing research into their biology, ecology, behaviour and cognition.

We were thrilled to chat with Jennifer about her most recent book, What An Owl Knows, as well as about owls’ reputation for wisdom, the incredible research that is shedding more light on their lives, and the mysteries that still remain.


Your most recent books, The Bird Way, The Genius of Birds and, to some extent, Birds by the Shore, have all focused on various aspects of bird behaviour and cognition. What inspired you to focus on owls for What An Owl Knows?

I wanted to focus in on a family or group of birds and take a deep dive into their biology and behaviour. I love birds, all birds. But owls? They’re unique in the bird world, night hunters with eerily quiet flight and extraordinary senses. When I started to think about writing a book about owls, they made my head sizzle with questions. What makes an owl an owl? How did owls get to be the way they are, so different from other birds? Why are they active at night? They have a reputation for wisdom, but are they in fact smart? I wanted to explore these questions and find out: What do we really know about owls? Quite a lot, it turns out. We’ve been studying them for a long time. But only lately have there been the advances necessary to solve some of the mysteries that have been around for centuries. Which made it a very good time to write this book.

Everywhere we look in the world, owls are intrinsically tied up in human art, culture and language. What do you think it is about them that captivates us so much?

It’s true, humans have been obsessed with owls for tens of thousands of years. Among the oldest examples of cave art ever discovered is an etching of an owl in Chauvet Cave in France 36,000 years ago. Now, all over the world, owls appear in stories and as symbols, sometimes of wisdom, beneficence and good fortune, and sometimes as emblems of evil and omens of death. I think it’s a combination of things that makes these birds so powerful. We see ourselves in them, with their round heads and big forward-facing eyes. Some species are cute, baby-like. But they’re also so different from us, creatures of the night, fierce in their hunting, so mysterious and uncanny. It’s this whole package of cute and brutal, familiar and strange, that makes these birds so exciting and sometimes, so troubling.

You mention near the beginning of the book that research into owls has, until relatively recently, been fairly sparse. What research techniques or tools do you think have allowed more progress to be made in recent years?

We have new “eyes” in the field—infrared cameras to see what’s going on with owls at night, radio tagging to track their movements and drones to explore remote owl habitats and peep into nests. New advances in satellite telemetry are illuminating the movements of owls over short and long distances. Remote acoustic monitoring—placing tiny audio recorders over large landscapes to listen in on owls—has helped us understand their populations and offered a window into their social lives. Nest cams have revolutionized the study of how owls raise their young, offering a 24-7 intimate look at interactions that would otherwise be impossible to observe. This technology is advancing new discoveries and also confirming observations by banders and other researchers who have been working in the field for decades.

Owls have long been associated with wisdom, although more recently, scientific studies have taught us that they aren’t as intelligent as previously imagined, especially in comparison to other birds such as corvids or parrots. Do you think this is accurate or simply a reflection of our tendency to view intelligence from a human perspective?

The science of understanding the minds of other animals is still in its infancy, and we still tend to view intelligence through our own lens. But there’s a growing awareness that there are different kinds of intelligence, different ways of knowing in the animal world that are hard to conceive of and hard to measure. On the question of owl intelligence, the science has been swinging back and forth. It’s true that owls may not be smart in the same ways that parrots and corvids are smart (and in the same ways we are smart). But they do have large brains for their body size, just as these other bird families do—and also, perhaps, ways of knowing that go beyond ours. People who train raptors used to consider owls not as bright as other birds, especially other raptors. But now that they’re beginning to understand the subtleties and complexity of owl behaviour and knowledge, they’re changing their tune. In their stories and in my conversations with other owl experts, I found plenty of good examples of intriguingly clever behaviour among owls.

What an Owl Knows delves deep into the science of owls and covers their adaptations, communication, courtship and breeding, as well as the lives of the people studying them. Following the incredible amount of research that you undertook, are there any questions or mysteries about owls that remain unanswered for you?

So many mysteries remain. We still have a lot to learn about basic things, like how many owls are out there and the details of how they’re moving around from season to season. Questions about their communication and their inner lives still abound. When one owl hoots or squawks or chitters at another, what is it really saying? How much information is packed into an owl’s vocalizations that we might be missing? When an owl is on a night hunt, what does it actually see and hear? And what is really going on in an owl’s mind?

What was the most fascinating thing you learned while researching this book?

I have to pick just one? Ok. I loved learning that burrowing owls—comical little owls that nest in the burrows of other animals like prairie dogs, woodchucks and armadillos—adorn the outside of their burrows with all sorts of weird and wonderful “treasures”: cornstalks and corncobs, bits of wood, bones, moss, swatches of fabric, bison dung, coyote scat, even pieces of concrete. Why? Why in the world would they expend energy on this sort of apparently frivolous decorating?

Finally, are you able to tell us what you are working on next?

I do have another book in the works, but I’m going to be owly about that and keep it a secret…


What an Owl Knows by Jennifer Ackerman is published by Oneworld Publications in July 2023 and is available from nhbs.com.