Author Q&A: Peter Fretwell and Lisa Fretwell – The Penguin book of Penguins

A Fellow of the Royal Geographic Society, Dr. Peter Fretwell, like the subjects of his new book entitled The Penguin book of Penguins, spends the majority of his time in the cold. As a senior geographic and remote sensing scientist, Peter has been responsible for leading many projects that further our understanding of the Polar regions and the wildlife that inhabits the area. Establishing and contributing to key projects to help better understand predators in the polar region by using satellite imagery has assisted in crucial conservation efforts.

For this book, Peter has joined forces with his wife Lisa who provides a unique selection of illustrations throughout the book. As an artist of over 30 years, Lisa draws on a wealth of experience having exhibited her works in London and New York.

Peter and Lisa Fretwell. Courtesy of the authors

We were lucky enough to catch up with Peter and Lisa recently to talk about the new publication.


What inspired you to write “The Penguin Book of Penguins”? Why penguins?

Peter: Strangely, there has never been a book titled The Penguin Book of Penguins, so when we were asked to write it, it was an opportunity we couldn’t turn down. I had previously written the Antarctic Atlas, published by Penguin Random House in 2020 and I have worked with penguins and on penguin science for twenty years. These small charismatic creatures are such a delight to be involved with, and they are a major part of working in Antarctica. Working at the British Antarctic Survey you pick up stories and anecdotes about them almost by osmosis, so having a chance to relay those narratives to a wider audience is a real privilege. We all love the jovial nature of these unique birds and their amazing adaptations to survive and thrive in some of the most challenging environments on Earth, but there is a more serious message that I also wanted to convey about the challenges that many of the species now face with climate change, pollution, habitat loss and overfishing. Communicating these challenges to a wider audience is one of our main drivers, whilst keeping the message light and not too “preachy”, to engage and inspire that wider readership.  What was more, we decided we wanted to include drawings rather than photos, so my wife, Lisa, who is a professional artist joined the author team to bring the illustrations to life.

How has your work as a cartographer and scientist at the British Antarctic Survey influenced your writing and perspective on penguins?

Peter: I really started researching penguins through my work on mapping and remote sensing. I started my scientific career as a geographer and got a job in the British Antarctic Survey as a cartographer. I have always loved maps, especially mapping the natural world around us, but I also loved the science and was soon not just making maps but helping with the geospatial analysis. The British Antarctic Survey is a wonderful and diverse place for environmental science and to help the scientist analyse their data was fascinating – you never knew what you might be working on; one day it could be mapping and analysing volcanoes, and the next it might be cuttlefish distribution.  In 2008, whilst making a map for our pilots, I discovered that we could see emperor penguin colonies in freely available Landsat satellite imagery. At the time, we didn’t know how many emperor penguin colonies there were or their distribution, so it was a groundbreaking discovery.

Peter Fretwell nose to nose with a wild Emperor Penguin.

How has the use of satellite imagery revolutionised the study and conservation of penguin colonies?

Peter: Fast-forward 17 years and we now know that there over double the number of colonies that we thought there were. We track their locations each year and do annual population assessments using satellite imagery. We have also used the technology to discover unique, previously unknown behaviours and traits, and we have witnessed and recorded the struggles and calamities they suffer as the continent warms and the sea ice diminishes. The Earth observation methods that we developed for emperors have been transferred to many other species of penguins and other types of wildlife around the world. My job itself has changed dramatically, from a scientific cartographer to a remote sensing expert and an expert on penguins and other polar vertebrate species that we track from space.

What were the major obstacles or challenges you’ve come across during your study of penguins?

Peter: Using satellites is a brilliant way to study these animals as most of the colonies are in extremely remote locations, where on-the-ground research is almost impossible. Even now the resolution of the most powerful satellites is still not good enough to see every individual adult and chick. We still need to get out there to calibrate our satellite counts and see how accurate they really are, but getting to emperor penguin colonies and synchronising ground (usually a unmanned aerial vehicle or UAV) counts with satellite data is really challenging, not just for emperor penguins, but for all the wildlife that we study from space. One of our current technical challenges is to improve the methods.

Lisa: Finding the inspiration and imagery for the more temperate penguins was quite challenging. The Antarctic and sub-Antarctic penguins were easier, as Peter had taken hundreds of photos of all the species throughout his career that I could work from. We had also visited New Zealand and seen many of the penguin species, like the adorable little blue penguin, there. On his travels, Peter had also photographed penguins on the Falklands and South America, but there were still some species that we had to trawl through published sources to get good reference images for. You have to be careful as what you see on the internet is not always correct, but it helps when you are married to a penguin expert!

Adélie penguin leaping out of the water. Lisa Fretwell

Many people feel rather enamoured by penguins. Why do you think that is?

Peter: I agree, and it’s hard to put your finger on the reason. Maybe it is a combination of their comic trusting nature and the fact that they are one of the few animals that stand upright on two legs, which makes them look a bit like us. It is really hard not to anthropomorphize penguins and compare them to little people with similar habits and social structures. Like us they often live in huge congregations, sometimes hundreds of thousands strong, they have complex courtship routines, bicker with their neighbours and do daily commutes to look after the family. They are also very tame, curious and often clumsy, which makes them quite endearing. Add their incredible, unique abilities in response to their challenging environments and you have an animal that really is quite engaging.

What are the biggest misconceptions about penguins that you would like to clarify?

Peter: There are many. Firstly, and perhaps obviously, penguins are a bird. They have feathers, not fur. Secondly, not all penguins live in Antarctica. A minority, only four of the eighteen species, breed around the coasts of the Southern Continent, but it’s fair to say that almost all (except for a few hundred) live in the Southern Hemisphere and most of them would call the waters around the Southern Ocean home.

What are the primary threats to penguin habitats, and how can these be mitigated?

Peter: It’s not just their habitats, but we can start there. Over the years, penguins have been eaten, killed for their feathers, had their eggs collected in their millions, been squashed and boiled down for their oil, and had their nesting habitats dug up and destroyed for fertiliser. In more recent times, urbanisation and land clearance has affected some of the more temperate birds, and the introduction of non-native species has had a devastating impact on many of the island-living species that are endemic to just one small group of islands.

Today, the main threats to the temperate species of penguins that live close to humanity are pollution from oil spills, overfishing and bycatch in their foraging grounds. But even in Antarctica and the remote island homes of penguins that no one ever visits, the influence of humans is affecting populations. Climate change is a global, man-made phenomenon that cannot be averted at a regional scale and is starting to have dramatic effect on many species. Although it is fair to say that in a warming environment, there will be winners and losers, at the moment, it looks like we will see more losers than winners.

BAS scientist Peter Fretwell in the field. Snow Hill, Antarctica.

What conservation efforts have been most effective in protecting penguin populations?

Peter: Around the world there are many amazing people and organisations helping penguins, from re-homing little penguins in New Zealand and Australia to the fantastic efforts to save African penguins from oil spills. In South America, there has been a great effort to protect breeding colonies from predation and on many sub-Antarctic islands there have been great programmes to eradicate non-native species that eat eggs and chicks, and trample breeding sites. There are fantastic efforts in many places that are saving penguins from the brink of extinction that anyone who loves or admires these birds should be grateful for.

Personally, what thoughts and feelings were you left with after this study of penguins?

Peter: Writing the book has not only highlighted how much we love penguins and how our culture has embraced these charismatic birds, but also the paradox of how badly we have treated them over the years and how threatened they are from human activity. Today most of those threats are indirect, but they are still caused by us and can still be solved by us.

Lisa: In terms of illustrations, I had to re-draw the ‘Penguin Digestor’ numerous times, because it made me feel a bit queasy just thinking about it. If you look at the original image it is very expressive and full of angst! I left those images of how we had mistreated penguins, like the Digestor and the Egg Collector until the very end when I could summon up the will to re-engage with them.

Emperor Penguin with chick. Lisa Fretwell

How do you envision the future for penguins?

Peter: For many species, it is a worrying time. Several are on the brink of extinction; some, like the emperor and chinstrap, are on a worrying trajectory caused by climate change that can only be solved at a global level. But there is hope. So far, we have not made any species of penguin extinct and there is still time to save all of the wonderful types of these birds, but the window for doing that is growing narrower every year.

What are the most important impressions you would like the reader to be left with after reading “The Penguin Book of Penguins”?

Peter: We hope readers will come to understand how wonderful and loveable these birds are and how invested into our culture they have become. When we think about the future of penguins, it can be a little depressing, but we are not there yet and that future is not yet written. If people care about a subject, then maybe they have it within their power to alter the future so that the worst predictions never come to light. If this book does anything, we hope it will enthuse people to help save penguins.

Lisa: I also hope that my illustrations enhance and portray these amazing birds in a true light. I tried to capture their personalities, particularly their behaviour, which I think is absolutely fascinating! The infographics should enable the reader to differentiate between each species, which for some penguin families, especially the banded penguins, is very subtle. I wanted to portray how endearing and intelligent these birds are. They have evolved to survive against the odds and their quirky nature is often fundamental to whether they breed successfully, survive extreme weather conditions and ultimately sustain their populations, and I wanted to reveal these quirks visually to enhance the reader’s experience.

What future research or projects are you planning on currently?

Lisa: I am planning to enhance my penguin illustrations with colour and exhibit them at a number of galleries. I have already been asked to create some other wildlife illustrations for the Arts Society Youth Fund locally, and I hope to illustrate or even write more books in the future.

Peter: I am currently leading multiple projects on penguins and other polar wildlife. My penguin-themed projects include mapping and monitoring seabirds on South Georgia, recording and improving the methods, carrying out population surveys of emperor penguins, and counting chinstrap and Macaroni penguins on the remote South Sandwich Islands. Results from all these studies should be coming out over the next year.

The Penguin Book of Penguins is available as a limited edition signed hardback book, while stocks last, from NHBS here.

 

A weekend of mammal discovery: my experience at the Mammal Society’s new residential training course

Course attendees learning small mammal survey techniques at the Field Studies Council’s Preston Montford activity centre

In the lead-up to this year’s National Mammal Week (21st-27th April), NHBS was kindly invited by the Mammal Society a preview of their new Mammal Identification and Ecology residential training course.

The Mammal Society is an active charity and learned society dedicated to the study and conservation of all British mammals. Founded in 1954, the organisation plays a crucial role in promoting research, education, and advocacy for mammal conservation. The Mammal Society works closely with scientists, policymakers, and the public to gather data, inform policy, and raise awareness about the importance of preserving Britain’s mammals species. The society’s efforts are vital in addressing the challenges faced by mammals, including habitat loss, climate change, and human activities.


Course attendees surveying habitat at the Field Studies Council’s Preston Montford activity centre

A golden ticket

I was fortunate enough to receive the golden ticket to this enriching experience – a preview of a new immersive, hands-on training course focused on British mammals. Heading to Field Studies Council (FSC) Preston Montford activity centre, I was looking forward to engaging with ecologists, conservationists, and enthusiasts, all united by their passion for conserving UK mammal populations. I was also excited to gain insights into the equipment and methods used for monitoring mammals and to enhance my own identification skills.

The training course aimed to introduce participants to the skills needed for mammal identification and help us familiarise ourselves with various monitoring methods. These skills are crucial for accurately tracking population trends, population movements, and the factors influencing changes in conservation status. With one in four mammal species threatened with extinction in Britain, gathering detailed data is more important than ever.

The FSC’s centre, surrounded by fields, woodland, ponds, and the nearby River Wye, provided an ideal backdrop for a mix of fieldwork and classroom-based learning. With the added presence of an evening bar, this was a most appropriate venue where course participants could exchange their thoughts and evaluations.

Diving into mammal identification

The course kicked off on Friday evening with a hands-on session preparing Longworth Small Mammal Traps. We strategically placed 40 traps in an area of mixed habitat (the more traps you put out the better the chances of success). We added hay to each trap and baited them with seeds and blowfly pupae to attract rodents and shrews. The next morning, our efforts were rewarded with the capture of a Wood Mouse and a Common Shrew. It was fascinating to learn about the shrew’s high metabolic rate and the importance of providing food in the traps.

Longworth Small Mammal Traps ready for deployment (left) and a mix of hay, seeds and blowfly larvae (right).
A Wood Mouse (left) and a Common Shrew (right) from the Longworth traps.

Additional monitoring methods included audio recording equipment, a Mammal Footprint Tunnel, and an improvised close-focus camera trap. The overnight footage from the camera revealed some curious Rabbits, adding to the excitement of our findings.

Footprint tunnel (left) and a trail camera tunnel (right) left out to survey mammals.

Classroom insights and field adventures

Saturday was packed with classroom sessions in a room that had been kitted out with mammal skins, skulls, nests, owl pellets, droppings and publications. The morning session was devoted to gaining a deeper understanding of small mammals and their ecological roles. The afternoon session focused on herbivores, teaching us how to identify the six species of deer in the UK and recognise signs of Wild Boar presence, such as uprooted turf.

A highlight of the day was the field session, where we searched for signs of mammal activity. From tunnels through grass and soil to footprints, droppings and gnawed hazelnuts, the landscape was teeming with evidence of our furry neighbours. The evening session on carnivores was equally engaging, with discussions on the UK’s mustelids, the elusive Wildcat, and the controversies surrounding mammal persecution and reintroduction.

The evening concluded with a session on bats, followed by a thrilling field trip with bat detectors and thermal imaging monoculars.

Dan dissecting owl pellets to assess the contents.

Sunday morning saw us checking the results from our field monitoring equipment. The most challenging part for me was the classroom session on tracks and signs, where I struggled with a footprint quiz. Dissecting owl pellets was a unique experience, revealing the remains a Field Vole and a Common Shrew in the pellet I looked at.

Owl pellets (left) and exposed Field Vole skull, bones and fur (right).

The final session covered sea mammals, such as dolphins, whales and seals after which a weekend of comprehensive learning was rounded off with a course evaluation.

Post-event musings

The Mammal Society’s training course was an invaluable experience, combining hands-on fieldwork with insightful classroom sessions. I returned with a deeper understanding of the diversity and complexity of the UK’s mammals, as well as the importance of ongoing conservation efforts. Equally, I gained a refreshed appreciation for the profound knowledge and dedication of the members of the Mammal Society. I also learned about some handy wildlife recording apps, such as the Mammal Society’s own Mammal Mapper, and iRecord for all biological recording. Whether you’re a seasoned ecologist or a curious enthusiast, you’re sure to return from this training enlightened and motivated.


Mammal Society events

The next Mammal Identification and Ecology weekend is scheduled for September – you can find more information here: Mammal Identification and Ecology – Residential Training Course (2 Nights)

The Mammal Society has numerous other useful events throughout the year – Please check out their handy overview at: Upcoming events

Recommended equipment for mammal identification:

Mammal trapping

Trail cameras

Bat detecting and recording

Thermal imaging

Recommended reading:

Britain’s Mammals: A Field Guide to the Mammals of Great Britain and Ireland

Europe’s Sea Mammals

How to Find and Identify Mammals (Revised Edition)

Live Trapping of Small Mammals: A Practical Guide

Mammal Tracks and Signs

Conservation volunteering to regenerate public grounds for butterflies and amphibians

In early November, NHBS colleague Dan volunteered with Chagford Conservation Group and the Chagford Parish Council to regenerate public grounds for wildlife – find out about his volunteer work below.


When strolling through your local public green space, take a moment to consider its value—not just as a recreational space but as a haven for wildlife. Behind the trees, shrubs, and ponds lies a delicate balance that requires care. Who ensures these spaces thrive for the benefit of both people and nature?

As you dig into the depths of your mind for answers and speak to fellow locals, you’ll discover that your local wandering patch has a past, present and even the future.

My front door patch, Padley Common, in Chagford – Dartmoor, has a variety of most of the above. Deciduous woodland, grassy fields aligned with stone walls and tree banks, areas with bracken and gorse, an area thick with young trees, streams and even some boggy areas.

One cloudy but warm November morning I joined the Chagford Conservation Group to help clear an area that was taken over by young willow and silver birch growth. Reading this with conservation specs may cause a frown. Cutting trees for conservation? The purpose of this venture, commissioned by Chagford Parish Council, was to restore the grounds to more favourable conditions for butterflies. Under the direction of Devon Wildlife Trust personnel, we cleared young willow and silver birch growth from the common. These trees, if left unchecked, would outcompete light-loving wildflowers and raise water uptake, drying out the damp grasslands needed by marsh fritillaries. This species depends on devil’s-bit scabious for its larvae. Its population in England has declined by 66% since 1990. Maintaining open, flower-rich meadows not only benefits butterflies but supports a host of other pollinators and insects.

Under the direction of Devon Wildlife Trust personnel, the Chagford Conservation Group and the Chagford Parish Council volunteers rolled up their sleeves and cleared a section of the common.

The cleared trees didn’t go to waste. They were repurposed into leaky dams that were fitted into streams that run through the common. These benefit the landscape in surprising ways as they allow water to pass through but slow its flow, reducing erosion and flood risk downstream. By creating side pools and wet areas, leaky dams also provide habitat for amphibians and aquatic insects.

With three organisations involved and so much goodwill from the local community, the day’s work saw the clearing completed and a series of leaky dams constructed. It was striking to see how effectively conservation targets can be achieved when vision, organisation, and community support come together.

Next time you wander through your local patch, take a moment to imagine its potential for wildlife. What small changes could make a big difference? Remember, with the right plan and a collective effort, even a single day’s work can transform a space—creating benefits for nature and leaving a legacy for future generations to discover as they explore their local patch’s story.


February 2025 update: 

Last weekend I joined a local volunteering group for some more work on the same site – clearing brambles and gorse to enable new growth. On checking the leaky dams, I was delighted to see that pools created by these were now full of frog spawn!

June 2025 update:

Butterfly Conservation have now completed a survey of Padley Common and found 3 times as many marsh fritillaries as last year. All the efforts in clearing and pulling up of tree saplings have made it much more attractive for butterflies. The weather may have had a positive effect too, but Butterfly Conservation assume the work done has made an impact.

 


Recommended reading:

Butterfly Conservation The Warwickshire Approach book cover. Butterfly Conservation – The Warwickshire Approach This book documents, celebrates and shares the many successes the Warwickshire Branch of Butterfly Conservation has had in conserving rare butterflies over the past 25 years. It is a manual of techniques, tips and ideas that will help and hopefully inspire others to create and manage habitats and to conserve butterflies.

The volunteers: a memoir of conservation, companionship and community

The Volunteers: A Memoir of Conservation, Companionship and Community
When Carol finds herself single and unemployed, she unexpectedly takes on the role of leading a quirky team of countryside conservation volunteers. Although their first days are rocky, she and her diverse group of volunteers bond over nature, finding friendship, purpose, and a renewed sense of belonging. The Volunteers is a heart-warming story about healing, community, and the redemptive power of the outdoors.

British Wildlife Magazine

Since its launch in 1989, British Wildlife has established its position as the leading natural history magazine in the UK, providing essential reading for both enthusiast and professional naturalists and wildlife conservationists alike.

 

Conservation Land Management logo.Conservation Land Management Magazine

Conservation Land Management (CLM) is a quarterly magazine, widely regarded as essential reading for all who are involved in land management for nature conservation, across the British Isles. Each aspect of CLM is designed for those involved in managing land to achieve conservation goals and priorities.

Conservation volunteering with the Dartmoor Preservation Association

Last month, NHBS colleague Dan volunteered with the Dartmoor Preservation Association – read below to find out what he got up to.


Walking across Dartmoor, you feel centuries of history embedded in its rugged landscape. The open moorlands, rolling hills, and ancient stone circles are more than just features – they’re fragments of a rich past. Volunteering with the Dartmoor Preservation Association (DPA) reminded me how essential the work is to protect the unique heritage of places such as these.

A misty grassland landscape

Founded in 1883, the Dartmoor Preservation Association is one of Britain’s oldest conservation organisations and is focused on safeguarding Dartmoor’s landscapes, wildlife, and cultural heritage. The DPA works tirelessly to protect the moors ecological balance and preserve the archaeological sites that reveal Dartmoor’s deep connection to human history. The organisation advocates for responsible land use, defends against damaging developments, and promotes awareness of Dartmoors irreplaceable natural and historical value.

Among Dartmoors treasures, situated by Huccaby Tor near Dartmeet, stands a quiet reminder of the Bronze Age (c.2000-700 BC) – Huccaby Rings. A monument scheduled under the Ancient Monuments and Archaeological Areas Act 1979, it is one of many ancient sites on Dartmoor that were built to hold livestock, protect crops and / or to accommodate farmers and herdsmen.

It wasn’t too surprising that when I joined the DPA to help clear the ring of Gorse, I was joined by several archaeology enthusiasts, each keen to help preserve this window into Dartmoor’s ancient past and ensure that Dartmoor’s story lives on for future generations.

Dan is wearing a blue jacket and a cap, he is standing in the middle of grassland with forest in the background and is smiling for the camera

Conservation volunteering goes beyond hands-on work; it’s a commitment to protecting the legacy of places like Dartmoor. Each task – preserving historical heritage, supporting wildlife habitat, managing access – is a step towards safeguarding unique beauty, preserving cultural history and supporting wildlife.

I’m certain that you, the reader, also have a special place near you – whether urban or rural – that deserves this kind of dedicated care.

Find our more on the Dartmoor Preservation Society website.

 

Recommended reading

Dartmoor 365: An exploration of every one of the 365 square miles in the dartmoor national park 265872Dartmoor 365
A true gem of a book, it has a story about every square mile of Dartmoor, filled with captivating folklore, historical insights, archaeology, and nature facts. An intimate exploration of a unique part of the world.

 

The volunteers: a memoir of conservation, companionship and community

The Volunteers: A Memoir of Conservation, Companionship and Community
When Carol finds herself single and unemployed, she unexpectedly takes on the role of leading a quirky team of countryside conservation volunteers. Although their first days are rocky, she and her diverse group of volunteers bond over nature, finding friendship, purpose, and a renewed sense of belonging. The Volunteers is a heart-warming story about healing, community, and the redemptive power of the outdoors.

Conservation volunteering at Proper Job Community Re-use Centre

One of the perks of working for NHBS is spending a few days per year volunteering for any organisation that works for the benefit of the environment. This November, I chose to venture out to a special place that ticks that box with a passion.

Proper Job helps their community recycle and re-use a huge amount of items for the home.

Proper Job in Chagford, Devon, is a registered charity that aims to protect and preserve the environment by promoting waste reduction, re-use and recycling. Its roots wriggle all the way back to 1993 when a group of environmentally conscious allotment holders launched a community composting project. They had noticed how much reusable, recyclable and compostable material was being dumped in the rural skip and started collecting anything that could be reused or recycled. In 1995, this resulted in the founding of a community business that was committed to principles of sustainability and the creation of jobs.

Fast forward to 2023, Proper Job continues to develop its operations and mission on a sizeable site, just outside Chagford. Proper Job now runs a treasure trove of pre-loved items: household products, media, building materials, clothing, tools, furniture, electrics. And, of course, the compost heap is still well alive… literally. Proper Job is closely involved with the community. Not only through opening the “Uptown” shop in the heart of Chagford town, it also liaises with other local organisations. Throughout the year Proper Job hosts affordable or free workshops, talks and community events in a bid to educate the public about the need for reducing waste and how to achieve this.

Proper Job bookshop

Helping out for a day at the Proper Job Resource Centre gave me a great chance to talk to staff and volunteers. I learned about how the site operates and its interaction with the public. I heard how the times have their signs, such as the challenges and aftermath of Covid, and how nowadays the rising costs of living seem to be leading to a greater share of customers with relatively higher income.

Proper Job’s strategic aims include four key terms: waste reduction, education, conservation, and community. These ethical values are of course all interlinked and it is commendable how Proper Job puts its energy in all these aspects. I certainly felt that the people I worked with during my day at Proper Job hold these values at heart. Nearly three decades of ongoing graft and development of this project bear testimony to the dedication of volunteers, staff and the support by the community. It’s a hopeful awareness.

Proper Job helps to make Christmas less wasteful and more affordable.

Learn more about Proper Job via their website or follow them on Facebook, Instagram and X.