Conservation – Page 5 – Hoopoe

Author Q&A with Rob Thomas: The Storm-petrels

In the latest work of the Poyser series, Rob Thomas brings us the definitive work on Europe’s storm-petrels. Meticulously researched by one of the world leading experts, this book follows European Storm-petrels, tracking their lives as they breed, migrate and overwinter. Rob shares the story of the group’s evolution, behaviour, ecology and adaptations, interspersed with charming personal anecdotes and observations.

Rob Thomas has been working at Cardiff University for over 20 years. He is a senior lecturer in Zoology who specialises in bird behaviour and ecology, and has been studying storm-petrels since he was 16. His work has taken him to Wales, Scotland, Portugal and the Faroes, where he studies storm-petrel breeding behaviour and long-distance migration journeys. He is the co-director of Eco-explore Community Interest Company and is a trustee of the Initiative for Nature Conservation Cymru (INCC).

We recently had the opportunity to chat with Rob about what inspired him to write a book on storm-petrels, his favourite storm-petrel facts and more.

Can you tell us a little bit about yourself and what inspired you to write a book about Storm-petrels?

I’ve been birdwatching since I was a small boy – initially in the land-locked county of Breconshire in mid-Wales where I grew up, but as a teenager I started visiting the islands of west Wales and later Shetland, where I encountered storm-petrels for the first time. Since then, I have been fascinated by these remarkable little seabirds and the islands where they breed. Birdwatching led me into bird-ringing, and later into a career as a university researcher and lecturer, and storm-petrels have been the subject of much of my research and teaching work, including supervising various MSc and PhD projects on the behaviour, ecology and conservation of different storm-petrel species around the world. In recent years there has been an explosion of storm-petrel studies, partly due to advances in miniaturised tracking technology and the genetic methods that can be used to study storm-petrel diet and evolutionary relationships. Given the mass of new discoveries being made, together with renewed interest in the folklore, art and literature relating to storm-petrels, they became the natural subject for a new book about these truly remarkable seabirds.

a small brown and white bird is skimming over the ocean water, with droplets falling from its feet — White-faced Storm-petrel (Pelagodroma marina). Image by Ed Dunens via Flickr

What do you think is the biggest challenge facing these species, and how do you think we can work to minimise the impacts of this challenge in the future?

Seabirds are among the most threatened groups of birds globally, and storm-petrels themselves are vulnerable to a wide range of threats, including various forms of pollution (e.g. plastics, oil and other chemical pollutants, as well as light pollution), overfishing, and the looming impacts of rapid climate and oceanographic changes. For storm-petrels, perhaps the greatest threat of all comes from the arrival of non-native predators on their breeding islands; rats and cats have caused the local extinction of storm-petrels on numerous islands, as well as the likely global extinction of one species, the Guadalupe Storm-petrel. Fortunately, this threat can very effectively be addressed by the eradication of non-native predators, and this is steadily being carried out on seabird islands around the world, including in the UK and British Overseas Territories such as South Georgia. This is one of the most dramatically – and immediately – effective methods for helping storm-petrels that we have in the conservation toolbox.

There are often challenges with tagging storm-petrels due to their small stature. Are there any technological advances in surveying and research techniques that you would like to see employed and that would aid in tagging and monitoring them?

The miniaturisation of tracking technologies over recent years (geo-locators and GPS tags, as well as associated technologies such as accelerometers and depth-loggers) has led to a genuine revolution in our understanding of the behaviour and ecology of storm-petrels at sea. It is only in the last few years that GPS tags have become small enough to track birds as small as the smallest storm-petrels, including our own European Storm-petrel; the familiar species of the NE Atlantic (weighing approx. 25g), and we suddenly have a quite detailed understanding of where they go and what they do at sea. This tracking technology is now being deployed on some of the very rarest species (e.g. Monteiro’s storm-petrel of the Azores), to understand their conservation needs. One very exciting new development is the combination of tracking storm-petrels on their foraging trips at sea, with DNA analysis of the prey that storm-petrels deliver to their chicks, and remote-monitoring of behaviour in the nest burrow using miniaturised cameras and audio equipment – these can be used alongside more traditional methods, such as manual nest-checks and weighing of nestlings, to understand the factors on land and at sea that contribute to breeding success or failure.

A small black bird in a hand — European Storm-petrel. Image by Rob Thomas

I really enjoyed learning that the oldest European Storm-petrel recorded was estimated to be 40 years old, an astonishing age for such a small seabird. Do you have a favourite piece of information you discovered throughout researching and writing this book?

Yes! I have many favourite storm-petrel facts, including my provisional top five:1) storm-petrel chicks can hibernate (i.e. strategically reduce their body temperature and become torpid across multiple days) in order to save energy between food deliveries by their parents; 2) storm-petrels have the largest eggs relative to their body size (approx. 25-30% of the mother’s body mass) of any birds; 3) we still don’t know how many storm-petrel species there really are (the 28 formally-described species in the book is definitely an underestimate); 4) the New Zealand Storm-petrel was thought to be extinct for 176 years, until it was re-discovered in 2003 and happily seems to be thriving; and 5) the name ‘petrel’ may not refer to the disciple Peter walking on the waters of the Sea of Galilee as has often been stated, but may actually be derived from a much older old word ‘pet’, meaning ‘to break wind’ (yes, I am easily amused).

The world is currently facing a worrying decline in not only storm-petrel populations, but also many other seabird species worldwide. What would you say to people who might question the importance of safeguarding and conserving these animals

Most people have never heard of storm-petrels, let alone seen one. But this does not mean that storm-petrels are unimportant – they are perhaps more important that even I (a self-identifying storm-petrel fanatic) had assumed. Species do not need to be useful to humans to be an important part of the ecosystem that they inhabit; they are ecologically important in their own right, whether we are aware of them or not. Furthermore, storm-petrels reveal to us many of the ways in which our own activities as humans are impacting the natural world. Even storm-petrels, among the wildest of creatures, breeding in some of the most remote parts of our planet, are badly affected by our pollution, our entourage of non-native pets, livestock and plants, and they are highly sensitive biological indicators to the ongoing climatic and oceanographic impacts of our activities that are changing the composition of the planet’s atmosphere. For all of these reasons, it is important that we understand and act on the things that storm-petrels can tell us, or we ignore these messages at our peril.

two small brown-black birds are flying above the sea surface, they have their wings outstretched and a bar of white feathers at the base of their tail — Wilson’s Storm-petrel (Oceanites oceanicus) Image by Ryan Mandelbaum via Flickr

Is there a species of storm-petrel that has so far eluded you, and which you would still love to see?

Oh yes, there are many! I have personally encountered only six or seven of the 28 or so storm-petrel species that are currently available (depending on how species are counted). I am hoping to spend the rest of my life occasionally meeting new storm-petrel species; two of my most-longed-for are the White-vented Storm-petrel (probably the smallest seabird in the world), and the Matsudaira’s Storm-petrel (one of the least-known and most-endangered of the storm-petrel species).

Finally, are you currently working on any other projects that you can tell us about?

Yes, an exciting new project involves working with local conservationists on the Faroe Islands (which host the largest colonies of European Storm-petrels) to understand the impacts (both positive and negative) of marine developments such as wind farms, fish farms and artificial lighting on these internationally important breeding colonies. Another very exciting new initiative is a collaborative project known as ‘Seaghosts’, led by Raül Ramos Garcia of the University of Barcelona in Spain, tracking the movements of different species of storm-petrels from breeding colonies across the North Atlantic, across their annual cycles. Seabirds ignore national boundaries, and such international collaborative projects are key to understanding threats and conservation solutions at a global scale.

Storm-petrels is published by Poyser Monographs and is available in harback and flexibound here.

Q&A with Pete Haskell: Celebrating 60 Years of the Scottish Wildlife Trust

The Scottish Wildlife Trust is the leading charity seeking to protect and restore the diversity of the Scottish landscape and its species. Based in Edinburgh, this membership-based organisation has a key role in the conservation of over 90,000 species through practical work, campaigning, education and management in over 100 wildlife reserves.

The Scottish Wildlife Trust will be celebrating their 60th anniversary this year, marking the occasion with their storytelling campaign Words of the Wild. We recently spoke to Pete Haskell, Head of Communications and Engagement, on the work of the Scottish Wildlife Trust, its iconic projects and their goals moving forward.

Visitors on Handa Island Wildlife Reserve. Image by Pete Haskell, The Scottish Wildlife Trust

Could you give us a brief introduction to the Scottish Wildlife Trust and how it was formed?

Today, the Scottish Wildlife Trust is Scotland’s leading nature conservation charity, but it all began as a small group of passionate people in Edinburgh 60 years ago.

It was in 1964 that Sir Charles Connell, along with a handful of others, decided to establish an organisation whose focus was the protection of Scotland’s wildlife for the benefit of present and future generations. Despite being run on a shoestring budget, within a year the Trust had 400 members and a long list of volunteer members of Council that included several professors, a general, several prominent landowners, a museum curator, the presenter Tom Weir and representatives from the Forestry Commission and The Nature Conservancy.

By the end of 1966, the Trust had acquired its first three wildlife reserves, and its work has continued to grow in breadth and scale ever since.

Could you tell us about the aims of the Trust, and what kind of work you undertake?

The Trust’s vision is of a network of healthy, resilient ecosystems on land and sea, supporting Scotland’s wildlife and people – something we’ve been pursuing for our 60-year history with support from our members, partners and volunteers.

The Trust successfully champions the cause of wildlife through policy and campaigning work, demonstrates best practice through practical conservation and innovative partnerships, and inspires people and communities to take positive action through education and engagement activities. We also manage a network of over 100 wildlife reserves across Scotland, welcome visitors to our three visitor centres at Montrose Basin, Loch of the Lowes and Falls of Clyde, and are a member of the UK-wide Wildlife Trusts movement.

Community Engagement Work. Image by Pete Haskell, The Scottish Wildlife Trust

What have been the most iconic projects for the Trust over the years? And could you tell us about your biggest challenges and successes?

Where to start! As an organisation that covers all of Scotland and all of its wildlife, we’ve been involved in a huge variety of projects over the last six decades.

In the 1980s, we had a big focus on acid rain, organising an international conference that brought together a wide range of experts to discuss the major points of evidence around the issue and the damage it causes. This resulted in delegates agreeing a detailed resolution that called for the UK Government to take decisive and immediate action to combat acid rain.

In the 1990s, one of our major focuses was peatland restoration. As well as leading a peatland campaign that raised awareness of the importance of the habitat and its wildlife, we worked in partnership with Scottish Natural Heritage (now NatureScot) to undertake one of the most comprehensive assessments of any habitat in Britain and published a peatland management handbook used by land managers across Europe.

In the 2000s, we started two of our most iconic species-focused projects. In 2008, we partnered with the Royal Zoological Society of Scotland to lead the five-year Scottish Beaver Trial in Knapdale, a groundbreaking project that saw the first formal reintroduction of a mammal anywhere in the UK. And in 2009, we established Saving Scotland’s Red Squirrels, a partnership project that continues to this day to protect our native Red Squirrel population.

The past decade or so has seen some of our most ambitious projects to date. Our Living Landscape initiatives in Coigach and Assynt, Cumbernauld and Edinburgh are working to deliver environmental, social and economic improvements on a landscape scale. Through our Living Seas project, we have created a network of snorkel trails across Scotland to encourage more people to experience the incredible marine life that Scotland’s seas are home to. And most recently we have been progressing our Riverwoods initiative which is set to accelerate the creation of woodland habitat along Scotland’s extensive river network.

Snorkellers. Image by Alexander Mustard for The Scottish Wildlife Trust.

What are your hopes for the future? How do you think the Trust’s goals will change past Strategy 2030?

Our firm hope is that we begin to see nature recovery on a national scale. We have 60 years of impactful conservation behind us, but nature is in a state of crisis, with one in nine Scottish species threatened with extinction. As our life support system, nature is vital to every one of us and it will take everyone – from decision makers to community groups – to help turn the tide on nature loss.

But even if we can get over that biggest of hurdles – where nature is no longer declining and starts on an upward trajectory – there is a huge amount to do. With the UK one of the most nature-depleted countries in the world, the road to achieving our vision is a long one. There will inevitably be new challenges to overcome but the thing that unites the Trust – our staff, volunteers, members, donors and partners – is an unenduring passion and love for nature. They say you can have too much of a good thing, but when it comes to nature, that’s just not the case!

Sixty years of educating, campaigning and protecting nature is an incredible milestone. How will the Trust be celebrating this important anniversary?

Whilst there are many things going on across the Trust to celebrate our 60th anniversary, the major focus is our storytelling campaign, Words of the Wild. The campaign has three strands: a series of events focusing on the stories of some of our reserves; a new and very recently launched podcast series that will explore the stories of the Trust’s past, present and future; and a nature writing competition that encourages others to share their stories of Scotland’s wildlife and wild places in no more than 1,000 words. The competition has an adult and a junior category and is open until 31st August. There are some fantastic prizes for the winners, including some generously donated by NHBS, for which we are very grateful.

If readers would like to find out more about the Trust or enter the Words of the Wild competition, visit scottishwildlifetrust.org.uk/

How Can We Use Sound to Measure Biodiversity? – Webinar Round-up

In July, the Biological Recording Company held the first of three webinars on bioacoustics in conservation. These webinars, which are presented in partnership with Wilder Sensing, Wildlife Acoustics and NHBS, began with a general introduction to bioacoustics, and will be followed with two sessions later in the year discussing the technology in more detail.

In the first webinar, talks by Geoff Carss of Wilder Sensing and Joe Hampson from the Somerset Wildlife Trust provided listeners with an overview of bioacoustic technology, its applications in measuring diversity and a short story of Honeygar farm, the Trust’s first ‘wilded’ site. NHBS are pleased to have sponsored this webinar, and we would like to thank participants who took part in our prize draw to win a Song Meter Micro 2.

Wilder Sensing: An entry-level introduction to bioacoustics

Bioacoustics provides ecologists and conservationists with an auditable, low-cost technology to measure biodiversity. It involves the use of audio recorders to passively detect sound in an environment, which can then be analysed to provide insights into community assemblage.

This technology can be used to measure several environmental variables, including animal presence, soil health, weather and infrastructure. Long-term monitoring of an environment can provide us with new insights on the richness and species density of an area and can even be used to analyse migration of key groups. Analysis can also determine areas of interest and habitat preferences for certain species, which can be used to inform future land management.

This method removes bias from traditional surveying techniques, where the skill and age of the observer, or sometimes even the day itself, can impact the result of a traditional survey. However, there are some limitations associated with this technology. False positives (the technology can misidentify a species), false negatives (the technology might miss a call), poor sound quality and mimicry can impact the accuracy of recorded data. To capture an accurate picture of community assemblage, passive recording is best used in partnership with traditional site surveying. This way, disturbance and false negatives can be mitigated, and through bioacoustic surveys, we can revisit the recordings as technology develops.

An acoustic sensor deployed at Honeygar Farm. Image by Wilder Sensing.

Key points:

Bioacoustic technology provides additional insights into community assemblage through the use of sound

The technology is best used alongside traditional surveying for a more accurate overview

The technology is limited by sound quality, false positives and false negatives.

Somerset Wildlife Trust: Honeygar Farm Case study

Honeygar Farm is an 81-hectare site of former intensive farmland, now owned by the Somerset Wildlife Trust (SWT). Since acquiring Honeygar, SWT have employed a unique ‘wilded’ approach to restoring the site.

Changes in hydrology management were among the biggest alterations at Honeygar, as the site has been subject to intense peat drainage to make way for agriculture. Honeygar has over two metres depth of peat, equivalent to 100,000 tons of carbon dioxide, so restoring the natural peatland by blocking drainage ditches was key to improving the carbon storage on site. Cutting and grazing by cattle, historically a huge pressure, has also been reduced from a herd of around 140 animals to 40 individuals. This, partnered with limited silage cutting and resting fields from grazing, is encouraging recovery of the botanical communities on site. The Trust is also exploring the use of different ungulates, including goats, ponies and different cow breeds, to better support the wetland habitat.

Over 20 months, nearly 13 million records were gathered using four sensors on site. This monitoring was undertaken alongside breeding bird, wintering bird and breeding wader surveys to provide a more detailed picture of community assemblage, confirmed with manual validation and targeted surveys to assess rare bird presence. Honeygar will continue to be monitored for insects, birds, mammals, fungi and plants to inform future management practices.

Speaker Joe Hampson deploying acoustic recorders on site. Image by Wilder Sensing.

Key points:

Honeygar Farm is the Trust’s flagship site for the ‘wilding’ approach

Formerly an agricultural farm, Honeygar is being restored to its natural peatland habitat through alterations in landscape management

Bioacoustic technology has provided insight into the community assemblage at the farm, helping to inform landscape management.

This webinar was an enlightening insight into bioacoustics and highlighted some interesting points on its conservation applications. Read our Q&A with Geoff to hear more about Wilder Sensing and its technology, and find more details on Honeygar on the Somerset Wildlife Trust website.

Find tickets for the next webinar, ‘Can Passive Acoustic Monitoring of Birds Replace Site Surveys?’ here.

This Week in Biodiversity News – 5th August

Environment

The number of plastic bags found on beaches has reduced by 80%. Since mandatory charges were introduced in the UK, data recorded by the Marine Conservation Society’s annual litter survey has recorded a marked decrease in the number of bags found on UK beaches – last year the survey recorded an average of one plastic bag every 100m, down from five in 2014. The discovery has led to calls for action to further reduce other types of marine litter.

A single diver swimming across a bed of bleached coral. The coral is very branched, and pale white. — Coral Bleaching. Image by The Ocean Agency/XL Catlin Seaview Survey/Richard Vevers via Flickr

The world’s reefs are in the middle of the most widespread heat event since records began. After 18 months of record-breaking temperatures, reefs in over 70 countries have been impacted and over 73% of reefs have experienced temperature extremes high enough to initiate bleaching. This event is the second recorded in the last ten years and is the fourth global coral bleaching event on record. Reef conservationists and researchers are urging the scientific community to rethink ways to tackle these events, and are calling for the redoubling of efforts to reduce other stressors on reef habitats.

Discoveries

Chimpanzees have been observed turn-taking during conversation. Researchers have followed five groups of Eastern Chimpanzees (Pan troglodytes schweinfurthii) in Tanzania and Uganda, recording the chatter between groups. The team recorded over 8,500 gestures used in back-and-forth conversation, finding a response time of around 200 milliseconds – the same time as observed in humans. Gestures involve hand flicking to shoo others away and stretching of hands to ask for food. Researchers believe that, in this species, gestures do the talking, while facial expressions and vocalisations add tone to the conversation.

A chimpanzee is resting its hand under its chin. It is looking thoughtfully towards the sky with the sun on its face — Image by Vanessa via Flickr

Brazilian wild sharks have tested positive for cocaine. Previous studies have found traces of cocaine in rivers, seawater, wastewater, and smaller marine organisms such as shrimp and mussels, causing serious toxicological effects. However, the concentration observed in Rio’s sharks is around a hundred times higher than other animals testing positive for this substance. The contamination source is currently unknown but is thought to have originated from losses during shipment or the dumping of narcotics to evade authorities. Particularly worrying, the Brazilian Sharpnose Sharks (Rhizoprionodon lalandii) analysed in this study are a component of the Brazilian diet, and it is not yet known how this contamination could impact humans.

Conservation

A near extinct species of crocodile is making encouraging progress in Cambodia. In June, sixty Siamese Crocodiles (Crocodylus siamensis) hatched, following the discovery of five nests in May; a rewarding result from nearly two decades worth of conservation efforts in the Cardamom mountains. Once widespread, these animals have been subject to hunting and habitat loss, resulting in their classification as critically endangered . Since 2012, a collaborative programme by local officials and Fauna & Flora has successfully released nearly 200 individuals, helping to maintain the global population which currently sits at around 400.

A large, black crocodile is laying on the floor in a patch of bark surrounded by small plants — Image by tontantravel via Flickr

Butterfly numbers in the UK are the lowest on record. An unusually wet spring and summer has dampened mating opportunities for butterflies across the country, resulting in a dramatic decrease in populations. With populations still struggling to bounce back from 2022’s drought, the wettest spring since 1986 has further prevented butterfly recovery across the country. Populations are at the lowest recorded since Butterfly Conservation’s Big Butterfly Count began 14 years ago, and as a key indicator species for habitat health, the findings are particularly troubling for the wider environment.

There has been a surge in ‘starving’ bats in Britain. Conservation groups have reported an increase in malnourished, underweight bats and fewer individuals overall for this time of year. A wetter-than-average spring and summer have negatively impacted insect, butterfly and moth populations, resulting in a blow to food sources for these animals. With nursing mothers unable to feed their young, volunteer organisations caring for bats are also seeing a surge in admissions.

Grey long eared bat flying with wings spread at night with leaves in the background — Grey Long-eared Bat via iStock

The NHBS Guide to UK Shore Crabs

A charismatic highlight of any rock-pooling session, crabs are both diverse and wonderful. Here we have a selection of the most common crabs in the UK, detailing their habitats and how to identify them.

Velvet Swimming Crab (Necora puber)