Author Interview with Jon Dunn: The Glitter in the Green

Jon Dunn is a natural history writer, photographer and wildlife tour leader. He is the author of the fantastic Orchid Summer among other books, and his writing and photographs have been featured in Britain’s Mammals and numerous wildlife magazines and journals.

In his latest book, The Glitter in the Green, Jon documents his expeditions from the farthest reaches of Alaska to the tip of South America in Tierra del Fuego in search of hummingbirds. Weaving history and travel writing together, the book describes the special place hummingbirds have in both mythology and culture, all while addressing not only how hummingbirds have suffered in the past, but the threats they face today. Jon kindly agreed to answer some of our questions below.

When and how did you first discover hummingbirds and what is it that draws you to them?

I’ve got the Natural History Museum in London to thank for planting the seed that was to grow, over the years, into a full-blown hummingbird habit. I was a young kid in the 1980s, taken to London by my mother for a day doing the usual tourist things – she wisely saved a visit to NHM London until later in the day, as she knew once I was in there I wouldn’t want to leave.

Amongst the many exhibits one in particular caught me by surprise – a large glass cabinet filled with hummingbird taxidermy. I know, that’s a bit bleak by the standards of today, but back then all I had eyes for were the shapes, forms and colours of the birds. They were so very different to the birds I was used to seeing in the Somerset countryside around our home. After that, every now and again I’d see footage of hummingbirds on wildlife documentaries, and began to appreciate further just how remarkable they were – what Tim Dee described as ‘strange birds: not quite birds or somehow more than birds, birds 2.0, perhaps’.

As a naturalist and a storyteller, I’m a bit like a bowerbird, drawn to colour. Hummingbirds really have it all going on – their biology is one superlative after another; their plumage is jewel-like; they’re found throughout the Americas in almost every conceivable habitat; and they’ve fascinated mankind from our earliest recorded encounters with them – there’s a rich vein of stories to dig into. 

Were there any particular encounters that stood out for you during your research?

Seeing my first Marvellous Spatuletail caught me by surprise. They’re renowned for their plumage and rarity alike, so I was prepared to feel that cocktail of joy and relief familiar to any birder who’s just caught up with a keenly anticipated species. The reality though far exceeded that – the delicacy of the bird compared to the many other hummingbird species swirling around the clearing in question, those preposterous tail feathers, the culmination of waiting decades to see one… I found that a bird could be literally as well as metaphorically jaw-dropping.

There were plenty of other moments that I’ll hold in my heart, and they don’t all involve the iconic, rare species. One such was watching Golden-tailed Sapphires, a hummingbird that looks as if it’s been dipped in rainbows, feeding in a clearing in the immediate aftermath of a heavy rain shower. As the sun broke through the dripping vegetation and steaming air we were suddenly surrounded by myriad small rainbows through which the birds were flying. That moment was ephemeral, over almost as soon as it began, but it’s etched in my memory forever. 

Hummingbirds have long been venerated and romanticised in art and in your book you talk about the emotive response that hummingbirds elicit in people. Why do you think that this is?

I found myself asking myself that very question as my journey into their world unfolded… Hummingbirds certainly seem to touch something deep inside us. They featured in the mythology of the Aztecs; inspired the most dramatic of all of the immense geoglyphs carved into the desert floor by the Nazca; appear in renowned art and literature; and, to this day, are singled out for particular love by those whose gardens they frequent, people who would not necessarily identify themselves as birders.

I think it’s their character as much as their beauty that has always called to us – many species are confiding, and are happy to feed in close proximity to us. Over millennia we’ve given many animals ample cause to be shy of us – and indeed, down the years we’ve slaughtered hummingbirds in their millions for their feathers, whether they were to feature in Aztec status symbols, Catholic icons or on 19th century hats. Yet despite this, hummingbirds remain unphased by our presence. Perhaps there’s something subconsciously reassuring about that.    

In order to see some species, your expeditions took you to some very remote places. Did this present any challenges?

Inevitably there were some logistical challenges to contend with, not least having to reacquaint myself with horse-riding after a decades-long and deliberate avoidance of it! There were a couple of close encounters with large predators that were, in hindsight, more alarming than they felt at the time – as a naturalist, I was thrilled to get (very) close views of a puma… But perhaps the most challenging moment of all was landing in Bolivia at the very moment the country was taking to the streets to protest the outcome of a recent presidential election. There was an incident at a roadblock manned by armed men that was genuinely scary, with an outcome that hung in the balance for a terrifying instant, and could easily have ended badly.

Hummingbirds face many threats to their existence, including habitat loss, climate-change, deforestation, as you talk about in your book. Post-research, do you feel any optimism for these magnificent creatures?

This is a really difficult question. On the one hand, I learned of examples of conservation where hummingbirds – amongst other species, of course – were the beneficiaries of excellent conservation work at a local level. On the other hand, when you start to take a pragmatic long view of our impact to date on the habitats the birds rely upon across the Americas, it’s hard to remain upbeat. We’ve destroyed so much already, especially in the past century – and with a growing global population, the pressures of economic development are only going to intensify human activity and its impacts.    

I sometimes think there’s almost too much optimism expressed when talking about conservation challenges anywhere in the world – a narrative that suggests “if we only care enough, the [insert iconic species name here] can be saved”. And to a degree, that’s good – we’ve got to have hope, as the alternative is too dreadful to countenance – but given our impact to date, and in an uncertain future where the effects of climate change are still unfolding and will continue for many decades to come, to name just the biggest of the mounting pressures on the natural world, I’m not sure that I do feel terribly optimistic, least of all for those hummingbird species that have very localized populations, or depend upon very specific habitats. They’re undeniably vulnerable. But like Fox Mulder, I want to believe…   

 Do you have any plans for further books?

I do indeed… Having delved into the worlds of two of my personal favourites, terrestrial orchids and hummingbirds, in the last two books, the book I’m currently writing will have a wider focus – exploring the evolving relationship between humanity and the natural world. It’ll be a deep dive into a world of obsession, joy, exploitation and wonder – a place where the truth is stranger than fiction. 

 

The Glitter in the Green
By: Jon Dunn
Hardback | June 2021

 

All prices correct at the time of this article’s publication.

 

Author Interview with Penny Metal: Insectinside

As recently featured on BBC’s Springwatch, Insectinside is a fantastic book featuring hundreds of species of insect that have all been found in Warwick Gardens in Peckham by author, Penny Metal.

With Penny’s incredible photographs and often humorous social commentary, Insectinside is an inspiring look at the diversity you can find just beyond your doorstep, as well as the vital importance of our natural spaces.

Can you tell us about your background and how you came to write this book?

I have a background in graphic design and often work in the area of nature conservation. This means I get to see what projects are happening etc. I work from home and decided to spend my lunch breaks in my local park photographing and surveying insects. I learned about the insects, watched them and counted the sheer number of species, and realised that no one else had actually surveyed a small urban park extensively. The book came about as I wanted to show people what was living in the bushes and to put Peckham on the entomological map!

Insectinside is written from the unique perspective of the insects that dwell in Peckham Park. What inspired you to write this way, rather than in a more traditional prose?

I wanted to try a different way of presenting information that would ‘hook’ people and short stories were the way to go. A lot of people don’t like insects and comparing their lives to ours not only elevates them, it gives the reader another perspective on how wonderful they are, and you can add a bit of humour alongside topics which are happening at the time (gentrification, Brexit etc). I find them fun to write, and am often inspired by how an insect looks or acts and what is going on in the news and try and link the two together. It is a good way to introduce some of the lesser known insects. My strategy appears to have worked!

Do you have any favourite species that you would like to tell us about?

I am a big fan of wasps, especially parasitic wasps. My favourite is the Gasteruption jaculator and watching her squeeze herself into the tiniest beetle holes where the scissor bees nest to lay her eggs is a sight to behold.

Recreational places like parks might not always be considered for their conservation potential. What can you tell us about the significance of parkland in the UK?

I think parks have been overlooked as areas of conservation. They can be large places and they have to work hard – recreation, dog spaces, playgrounds, sports spaces, neat formal areas for aesthetics etc, lighting, and usually open 24 hours – but there is no reason why we can’t include habitats for our wildlife. A simple solution would be to leave areas un-mowed to grow wild. In the parks of my local area in London, large swathes of grasses and flowers have been left to mature and people have been really receptive to it. I think we are finally moving away from the Victorian ideal of neat and tidy!

With an ever-growing population in the UK, parklands are becoming increasingly busier. What do you think we need to do to protect our natural spaces?

Tell people to stop destroying them, and to take their rubbish home! Luckily there is more awareness now about the importance of our natural spaces, though there is a way to go yet to get everyone on board. Personally, I would like for our natural spaces to be so integrated into our lives that we can drop names like ‘nature reserve’ and just appreciate nature for what it is.

The book has a great many beautiful insect photographs, taken by yourself. Do you have any advice for aspiring macro-photographers?

Keep a sharp eye and a steady hand! Watch them to see how they move – for instance dragonflies tend to return to their perch a couple of times before they fly away for good.  And a sunny day with clouds is the best time to photograph flying insects as they stop and have a rest when the sun is hidden.

Insectinside
By: Penny Metal
Paperback | Due in stock soon |  £19.99

 

All prices correct at the time of this article’s publication.

 

 

 

 

 

 

 

Author interview with Elsa Panciroli: Beasts Before Us

Elsa Panciroli is a palaeontologist who studies the evolution and ecology of extinct animals – particularly mammals from the time of dinosaurs. She is a researcher based at the University of Oxford and an associate researcher at the National Museum of Scotland. A keen science communicator, she has contributed to The Guardian, Palaeontology Online and Biological Sciences Review, and co-hosts the Palaeocast podcast. Beasts Before Us is her first book and tells the amazing story of early mammal evolution, taking the reader back well before the dinosaurs even rose to prominence. Leading up to publication, we reached out to Elsa and asked her some questions.

Elsa Panciroli on the Isle of Skye

You write that you started your palaeontology career interested in dinosaurs and Ice Age megafauna. What turned you on to the path of our mammal ancestors?

Like so many things in life, it was serendipity. During my masters degree the renowned mammal palaeontologist, Prof Christine Janis, moved back to the UK from the US. I’d recently read her paper on giant extinct kangaroos and I was excited to meet her and learn more. It turned out she was offering a project studying mammal ankle bones, so although there were dinosaur projects available, I jumped at the chance to work with Christine. I learned so much from her, she was (and still is) a brilliant mentor. I soon realised what a lot of questions were still to be answered about extinct mammals. Afterwards, I did my PhD on little-known Jurassic mammals from Scotland, and started exploring their even more ancient past – I just couldn’t believe what I discovered! That’s why I wanted to write the book, to share what I had learned.

Given that we are so biased to mammals where, for example, conservation is concerned, why do you think that there has been so little mainstream interest in early mammal evolution? Your book shows that there is a fascinating story playing out before dinosaurs even evolved. Do the dinosaurs in that sense enjoy the advantage of incumbency in our imagination? Or do the details of mammal evolution not easily lend themselves to telling a captivating story?

I disagree that mammal evolution doesn’t lend itself to story-telling, but the many authors who’ve tackled the subject up to now focused on recent evolution and assumed everything before then wasn’t relevant. I wrote Beasts Before Us because our ancient relatives are incredible! I was quite shocked by this whole plethora of animals that not only predate the dinosaurs, but were incredibly successful, bizarre and exciting. They were the first to evolve iconic features we are fascinated by today, like large body size, sabre-teeth and gnarly horns. It’s just the icing on the cake that they are actually related to us. I wanted to show people the history of mammals isn’t a story of waiting in the wings for the dinosaurs to disappear, but of the stunning success our lineage (synapsids) over the last 350 million years, including before dinosaurs even existed.

I think there are a few different reasons why early mammal evolution doesn’t get the same love as dinosaurs. Dinosaurs are kind of otherworldly – in fact you might argue they are almost mythical – so naturally this makes them extremely compelling. As a result, people forget to look beyond them at what else has happened in evolutionary history. The media don’t help, because they overly focus on dinosaurs and always plaster them centre stage. Dinosaurs have become a touchstone for ancient, and other discoveries are always placed in relation to them. There is a lot of dino-noise to get through if you want to tell the stories of other animal groups!

An important theme in your book is that evolution is not a march of progress but a process of adaptation to current circumstances. It seems that our early ancestors thoroughly explored the space of possibilities and pioneered both behaviours (e.g. digging underground burrows) and morphology (e.g. sabre-toothed therapsids) that would later evolve again independently through convergent evolution. Are there examples of morphological adaptations or suspected behaviours in early mammals that have not reoccurred in more recent mammal evolution?

That’s a really interesting question! As we make new fossil discoveries, it’s increasingly apparent that there is very little happening on Earth today that hasn’t been done multiple times before by other animals. Of the top of my head, I can’t think of anything they – or other animals – did in the past that hasn’t reappeared again, nature is just like that. If anyone can think of something they can always tweet me about it!

I thought one very interesting idea you mention concerns the adaptive radiation of therians, i.e. the group that gave rise to both marsupials and the placental mammals to which we belong. They remained a species-poor group until after the dinosaurs went extinct, and it is traditionally thought it was competition from the dinosaurs that held them back. Instead, here, and in the Current Biology paper that just been published (congratulations, by the way), you argue that it was competition from other mammaliaform groups that held back the therians. Can you give us the elevator pitch in support of this idea?

Part of the problem is that the fossil record can be very misleading, and we can’t easily separate cause and effect. People saw that mammals became larger when non-bird dinosaurs disappeared, and so they drew a causal line between the two. To tackle this issue more robustly, my co-authors and I compiled big datasets of the changes taking place in the skeletons and teeth of mammals from the time of dinosaurs, and just afterwards. Our results showed that in the earlier-branching groups of mammals the number of changes taking place in their bodies continued to rise – in other words, they were still splitting into new groups and evolving new specialisations. But for the therian mammals (which include the ancestors and relatives of all modern mammals except platypuses and echidna), the number of changes was pretty flat in the time of dinosaurs. That is, until the disappearance of the earlier mammal groups – some of which didn’t become extinct until after the non-bird dinosaurs. Crucially, it wasn’t until these later extinctions that we really see therians diversifying more widely, therefore showing that it was competition with the other mammals that had been preventing them from diversifying prior to that point.

You mention Clashach quarry in Scotland as a site of great scientific interest due to its record of fossil footprints. I often shudder to think how many body and trace fossils are destroyed forever during mining and construction activities. Do you generally find commercial operators willing or interested to cease or move activities when fossils are found? Or would most rather just quietly ignore them to prevent costly delays?

Although you’re right that fossils are destroyed during extraction, we can’t forget that most fossils wouldn’t have been discovered in the first place if it wasn’t for quarrying and mining! The ties between extractive industries and palaeontology are really important, but they also form part of the colonialist history of the discipline, which we must acknowledge. The attitude of extraction companies varies from place to place, but many are really keen to support scientific study as much as they can. For example I know several have welcomed info sheets and talks from experts on how to recognise fossils, so that the workers know what to look out for. They’ll often put aside potential fossil finds so that they can be examined and studied. It’s hard to find a balance between industry and conservation, but for the most part quarry workers are just as excited about fossils as everyone else!

In your book, you broach the sensitive issue of decolonisation, acknowledging the often dark and unsavoury history of our scientific disciplines. Beyond words, what actions do you think are necessary to get to terms with our past? For example, is the repatriation of museum specimens always the preferred option?

Decolonising science and museum collections is a complex subject, and I’m not an expert, but the first step for all of us is to listen: we need to hear about, understand, and explore the legacy of colonialism and empire on our lives, not dismiss it. Repatriation of objects is appropriate in some cases, but there are many other things that need to happen as well. For example many objects are completely separated from their context – where they came from, the circumstances of their collection, and who collected them. We need to ask ourselves what the purpose of collections actually is now, who they are for? The scientific system itself was built in such a way that it biases who carries out research, how we carry it out, how it’s published, and who benefits. It’s going to take time and thought to rebuild it to be more equitable.

I was very impressed with the visual language you use throughout this book and read that you have a keen interest in science communication. I am a regular listener of the Palaeocast podcast that you co-host, but beyond that, what other platforms and outlets do you contribute to?

I have to admit I don’t keep a regular online presence at the moment, except for my twitter feed! I used to blog, but as I’ve ended up writing more articles (I wrote for The Guardian for a while, and some other freelance work) I’ve had less time. However, when possible I place content on my YouTube channel, particularly short videos explaining new research, or talking about fossils. I’ve also done some readings of Beasts Before Us, if you want a wee taster!

Beasts Before Us is your first book. Now that it has been published, is it time to turn your attention back to research, or was the experience rewarding enough that we can look forward to more books in the future?

I’ve actually been carrying out my research alongside writing, which has been pretty exhausting! It’ll be nice to devote more attention just to the research for a while. Having said that, I do have a second book lined up, and many more ideas in the queue, so you can definitely expect more in the future!

 

Beasts Before Us: The Untold Story of Mammal Origins and Evolution
By: Elsa Panciroli

 

All prices correct at the time of this article’s publication.

Author Interview with Adam Nicolson: The Sea Is Not Made of Water

From the author of The Seabird’s Cry, Adam Nicolson’s new book The Sea Is Not Made of Water offers a glimpse into the intricacies and minutiae of the intertidal zone. Blending ecology and human history, poetry and prose, Adam takes us on a fascinating journey to the shore.

Adam is a journalist and prize-winning author of books on history, landscape and nature – among many other accolades, he won the 2018 Wainwright Prize for Nature Writing. He has also made several television and radio series on a variety of subjects.

First of all, we loved The Seabird’s Cry and were very excited to learn of The Sea Is Not Made of Water about intertidal zones. Could you tell us about what drew you to this habitat and the inspiration behind your book?

For nearly thirty years now I have been going to stay in a small house at the head of a bay on the west coast of Scotland. It is somewhere my wife’s family have been going for generations and now our children and grandchildren love it too. It has everything you might long for from a place like that: cliffs, woods, waterfalls, a dark beach made of basalt sands, a lighthouse, a ruined castle, stories, beauty, birds, fish; but one thing it did not have because of the geology, was a rockpool. For years I have dreamed of making one – a place of stillness set in the tide, and this book is the story of how I made three of them in different parts of the bay; one dug in with a pickaxe; one made by damming a narrow exit to the sea from a hollow so that the dam held the pool behind it; and one by making a circular wall low down in the intertidal.

The foreshore belongs here to the Scottish crown, and so I got permission to do this first and then set about making the pools – wanting them to be cups of what I learned to call bio-receptivity – beginning with quite literally a rock-pool, an empty planetary space, and then waiting to see what the sea would deliver to them. An enlargement of the habitat. A tiny gesture to counteract the lack of accommodation we are all making for the natural world. In a way, no more than making sandcastles, but sandcastles that would invite their inhabitants in and would last more than a single tide.

Shorelines and rock pools are incredibly biodiverse environments; how did you decide which species to write about?

It was not about rarities. I thought for a while I should call the book ‘All the Usual Beauty’. And anyway the species selected themselves. I began at the top of the beach at the spring equinox, although there was not a hint of spring, when I started poking around in the seaweeds thrown up there by the winter storms. Nothing else seemed to be alive on this frozen March day, but lift away the lid of weed and quite literally the sandhoppers sprang into life around me. Again and again they went though their routine: leap, wriggle, play dead, leap, wriggle, play dead. Almost toy-like in their repetitions.

And so that provided the model – see what was there and look carefully at it. Of course, books like mine are entirely parasitic on the work of many generations of biologists and that too turned out to be the pattern. Watch the sand hoppers and then read about them. Read about them and see how much of what I read I could find on the shore. With prawns, winkles, shore crabs, anemones, limpets, sea-stars, urchins and barnacles, I simply oscillated between the pools and my books: what was there? What had people discovered about them? How did they interact? What were the principles governing their presence or absence? And with all of that came the repeated and slightly sobering realisation that unless I knew to look for something it was very difficult to see it was there. Mysteriously, we are often blind to what is in front of our eyes.

Did you discover anything particularly interesting that you were previously unaware of during your research?

So much! I never knew that sandhoppers could inherit from their parents an understanding of where the sea was and how to get there. That winkles can tell if a crab has been in their pool. That crabs, even in the tiniest of larval stages, can recognise the movements and timings of the tides. That sea anemones can identify other sea anemones that are not their relations and effectively destroy them. That prawns have an imagination – that might sound like too much, but it has been shown that they can remember past pain and project it into present and future anxieties. Anxiety is different from fear; it is a fear of what might be there. In other words a prawn can think beyond its present reality.

Some of my most treasured childhood memories involve investigating Dorset shorelines and delighting in the incredible variety of species I would find there. What do you think it is about the shoreline that people connect with so strongly?

I think maybe the shore is so alluring because it is both so strange and so easily to hand. It is a revelation of another world a yard or two away from our own. The temptation is to think of the pool as a natural garden, but it is a very odd and very wild garden. Looking perhaps as settled and delicate as a painting but in fact a theatre and cockpit of competition and rivalry. And garden whose walls are dissolved twice a day, an enclosure that becomes part of the general world with every high tide. That ambiguity is what entranced me, the sense of its being a micro-ocean, a micro-arcadia, a micro-laboratory in which all kinds of intimacies and precision in natural beings can be witnessed an inch beneath your nose.

Although adaptable, rocky shore inhabitants are not invincible, what do you think is the biggest threat to the rocky shore ecosystem and are some species more at risk than others?

Sea-level rise should not cause the inhabitants of rocky shores too many problems. They will climb the rocks in time with the water. But other anthropogenic effects are quite likely to be catastrophic. Animals that depend on their shell for protection are living in an increasingly hostile world. Everywhere in the North Atlantic outside Europe, as the Dutch evolutionary biologist Geerat J. Vermeij has written, an increase in shell thickness has been taken as a response ‘to the spread of the introduced European green crab (Carcinus maenas), but these changes may also have resulted from an overall increase in the abundance of native shell-crushing crabs (Cancer spp.) and lobsters (Homarus americanus) as the predators (including cod) of these crustaceans were overfished’.

The destruction of the cod and the collapse of their position as an apex predator in the Atlantic has made it a sea of claws. That hugely increased claw count, and competition between the clawed animals, has risen to the point where the shell-dwellers are feeling the pressure and have responded as shell-dwellers and shell-wearers must: by thickening their defences and toughening their lives.

But modern life has provided them with another hurdle: the acidification of the world ocean. One-third of all the carbon dioxide that has been emitted since the beginning of the Industrial Revolution has been absorbed by seawater, turning it acid. Making shells and skeletons, drawing calcium carbonate from the water, is more difficult in an acid sea. All kinds of ripple effects will spread out from that: more crabs, fewer winkles, denser algae and a disruption of the entire coastal ecosystem.

The effect is more than purely chemical. When sea-fish are exposed to acid water, their senses of smell and hearing are both disrupted. Young fish find it more difficult to learn, become less frightened by danger and are even attracted to the smell of predators. The same now seems to be true of shellfish. Acid water is distorting the minds of animals in the entire ecosystem.

Do you have any further projects or books in the pipeline?

I do! I am writing a long piece on English chalk-streams and also slowly researching a book about the birds in the wood at home. And I would love to write something one day about the mammals of the Scottish sea. Otters, seals, whales and dolphins. One day!

The Sea Is Not Made of Water
By: Adam Nicolson
Hardback | Due June 2021 | £16.99 £19.99

 

All prices correct at the time of this article’s publication.

NHBS In the Field – H2a Hydrophone

The H2a hydrophone from Aquarian Audio is a mid-range hydrophone, allowing high quality recordings for professionals, whilst remaining affordable for marine naturalists.

Like most hydrophones, the H2a is powered via a compatible recording device. Available with either a TRS 3.5mm jack (plug-in power required), or XLR connector (phantom power required) and a variety of cable lengths, you are sure to find an option suitable for your requirements.

How We Tested

We tested the H2a hydrophone across two days in varying weather conditions in early June 2021.

Our kit was made up of the 3.5mm jack H2a hydrophone, in conjunction with an old DR-05 Tascam recorder and a pair of earphones. The DR-05 is actually a discontinued model, however we do sell it’s successor, the updated DR-05X. The H2a will work well with any recorder with a 3.5mm port that can provide plug-in power. Many recorders offer this ability, but if you are unsure please do check your manual.

Setting up the hydrophone system was very straightforward. Once plug-in power was switched on via the recorder’s menu settings, we simply plugged in the H2a to the mic-in socket and were ready to begin.

Tests were performed in a number of environments including rockpools, off a small boat in deeper water and a controlled environment (container of water). Between these locations, we did find adjusting the gain accordingly was necessary, however this was straightforward, using the Tascam recorder’s input level controls.

In shallower, more disturbed water we tried attaching the cable to a makeshift ‘boom pole’ aiming to gain greater control over the movement of the hydrophone while reducing handling noise.

It is built to be durable, with a stainless steel core and rubber covering, but we still handled it with care and rinsed and dried it after each use. Aquarian themselves say the H2a can survive accidental drops, however we chose not to test this!

Recordings were made on the Tascam device, to a micro-SD card and then transferred to a computer. The open-source audio program Audacity was used to view the waveform, including adjusting levels, and also allowed us to plot the frequency spectrum.

What we found

Our initial impression was that the H2a was surprisingly lightweight and compact, measuring just 25mm x 46mm (without the cable) and weighing little over a hundred grams. This made for easy packing in a small rucksack.

The hydrophone comes in neat cardboard packaging which is not particularly suitable for use on location. Despite the hardiness of the hydrophone itself, it would certainly provide peace of mind to purchase or use some form of carry case. We would not, however, recommend a waterproof case as it may trap moisture and salts that could eventually lead to corrosion.

The hydrophone is highly sensitive and so was vulnerable to signal overload if knocked accidentally or handled roughly. During recording, our main obstacle was noise from cable handling, which was noticeable during playback. This is to be expected with any hydrophone and certainly was not the worst I have experienced, but was still slightly frustrating. We quickly learned to ensure the cable was lowered ‘hand over hand’ into deep water to minimise noise.

Even with only a 3 metre cable, slight tangling did occur, which over time could lead to damage. For future uses with longer cables we would consider investing in or making a cable spool/reel. A spool would likely also reduce the experienced cable handling noise.

In shallower water, especially along the tide line, the makeshift pole attachment was very successful and made a significant difference to cable noise level. It also allowed us to position the hydrophone with precision and avoid damage that could have occured from the stronger waves dragging it towards nearby rocks.

When working from the boat in deeper water, we simply released the cable by hand as the current was slow. We found the shape and weighting (high specific gravity) to be a clever design that kept the hydrophone more-or-less vertical even in currents. Although it is worth noting that we only tested this ourselves in relatively slow moving water.

Below is a sequence of recordings taken in varying locations. The first exhibits the sound produced by the paddling of the small boat. The hydrophone performed very well while being dragged behind the boat, catching the bubbling as the paddles broke the surface.

Of particular interest to us in the field was the man-made noise pollution from the nearby (0.5 miles away) docks. Despite being rather un-noticeable by air, loud hammering was clear through the hydrophone.

The final recording in the audio above was taken at a rising tide, with gentle waves shifting the sand and sediment below the hydrophone.

While we had heard reports that some people have found sensitivity dropping off at higher frequencies with this unit and other hydrophones, our field tests produced recorded sounds up to 10kHz easily.

Our Opinion

Clear audio with limited unwanted noise was easily produced with the H2a hydrophone. It provides a fantastic way for ocean lovers and scientists alike to explore life underwater.

A few practical accessories such as a pole and spool would be worth considering as they can really improve audio quality while also making work in the field just that little bit simpler.

With further experimentation and potentially a bit of luck with interesting sound sources, I am confident that the H2a will continue to yield high quality recordings at a very fair price point.


The H2a hydrophone is available from the NHBS website on its own or as part of a kit including the Tascam DR-05X recorder.

Note: When deciding upon a model it is recommended to choose based first and foremost on compatibility with your recorder’s connector type. XLR is however, often the preferred choice for professionals due in part to reduced electromagnetic interference.

Visit nhbs.com to view our full range of hydrophones. 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.

 

An Evening at Sharpham – Bat and insect survey

The lengthening evenings of late Spring or early Summer are an ideal time for an evening wildlife walk. Now the vegetation has become more lush and the air has become warmer, the insects form in thicker clouds and the bats are now on the wing.

The Sharpham estate is a 550-acre area which runs alongside the River Dart just outside Totnes. This historic landscape is home to the Sharpham Trust, an educational charity whose Wild for People project aims to rewild areas of the estate and enhance biodiversity in the region. To read more about the history of the Sharpham Estate and the launch of their Wild for People project, click here.

A few of us from NHBS walked up to the Sharpham estate where we met a group of Ambios’s conservation volunteers and trainees for an evening wildlife walk. We brought a selection of bat detectors with us and explained the differences between our most popular professional detectors. We distributed any active bat detectors among the volunteers and showed them how each type worked. We then left the farm just as dusk was settling with detectors armed and ready.

As we wandered the footpaths and fields of the estate, we watched several Noctule and Leisler’s bats commute high above the fields, along with some Common and Soprano pipistrelles zipping along the hedgeline foraging.

We then cut across a field to a dead tree where NHBS Wildlife Equipment Specialist Josh had previously set some insect bait traps. The traps were baited with a mix of banana and beer and had been set in the hopes of catching saproxylic beetles emerging from dead wood.

Josh has also been monitoring the beetle diversity of Sharpham through a series of pitfall traps placed across the estate, although prior to our walk they had unfortunately been closed due to heavy rain. Unfortunately no beetles were found in the traps this time, but we did spot a variety of species scurrying along the field and forest paths including Anchomenus dorsalis, Dromius agilis and Staphylinus dimidiaticornis, along with the very common Nebria brevicollis (gazelle beetle) and Pterostichus madidus (black clock beetle).

Once it was much darker, on our way back up to the farm, we also had the pleasure of listening to the alien-like call of a sitting Lesser Horseshoe bat that was perched just meters away from the group. It made for an exciting end to the walk and we hope to detect even more bat species through passive detector recordings.


See the full range of bat detectors and insect survey equipment on the NHBS website.

To find out more about Ambios and the work of Lower Sharpham Farm, please visit https://www.ambios.net/.

Conservation Land Management: Summer 2021

Conservation Land Management (CLM) magazine is designed for those involved in managing land for conservation, and is an invaluable source of information on good conservation management practice. Here, Assistant Editor Catherine Mitson provides a summary of the range of articles featured in the new Summer issue.

Monitoring and surveying techniques in conservation and ecology are constantly changing and improving. The use of thermal imaging is one example of a non-invasive method that is becoming a popular choice for those involved in wildlife surveys. Dan Brown, ecologist and founder of Wild Discovery, provides an overview of thermal imaging and the potential for its wider application in species monitoring, surveying and ecological consultancy, while still keeping some of its limitations in mind.

Citizen science also plays an important role in species surveys, and Claire Boothby, Training and Surveys Officer for the Bats in Churches project, describes an opportunity for the public to get involved in bat surveys. Bats can often be found roosting in churches, but due to the open roof structure of many of these buildings, the architecture and items housed inside are susceptible to damage from bat droppings and urine, to the despair of church users. The Bats in Churches project is trialling mitigation measures to enable both humans and bats to use churches harmoniously. This article showcases some churches where these mitigation measures have been implemented successfully and describes how the public can take part in the Bats in Churches Study to improve our current knowledge of how bats use churches.

Also in this issue, James Adler and Steve Proud describe the Pirbright Red Deer Project. The Pirbright Range Danger Area (RDA) in Surrey is one of the most extensive and least disturbed tracts of heathland in southern Britain but as this is an active firing range, traditional means of heathland management are not practical. Instead, red deer have been used for conservation grazing to keep vegetation in check, to the benefit of the rarities found at Pirbright. This article discusses the importance of Pirbright and the development, rationale, and results to date of the Red Deer Project.

Jos Milner takes us north to the Cairngorms National Park where the Our Water Environment project, delivered by the Tomintoul & Glenlivet Landscape Partnership, has set out to restore and enhance the river Avon catchment. Here the river bank has suffered from bank erosion and sedimentation as a result of overgrazing and loss of riparian tree cover. This article explains how green engineering techniques, which use natural materials such as logs or coir matting as a form of bank protection, have been implemented on the River Avon, and how these could provide an opportunity for landscape-scale river restoration.

The final article in the Summer issue looks at how one farmer changed the way he farms to benefit wildlife. Martin Lines is a third-generation farmer and contractor, and with the advice provided by Farm Wildlife, he no longer uses insecticides on his land and has instead shifted to an Integrated Pest Management approach. Kathryn Smith and Martin Lines discuss what this has meant for practical farming operations, and the impact this has had on both crop yields and wildlife.

In this and every issue you can expect to see Briefing, keeping you up to date on the latest training courses, events and publications, and On the ground which provides helpful tips or updates on products relevant to land management.

Other features that regularly appear in CLM include Viewpoint, a similar length to our main articles, but here authors can voice their own views on various conservation issues, and Review, which can include letters from readers or updates from our authors.

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. Previous 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. If you are interested in writing for CLM feel free to contact us – we will be happy to discuss your ideas with you.

Mammal Society: Q&A with Stephanie Wray

The Mammal Society is a charity dedicated to the research and conservation of Britain’s mammals. By surveying, monitoring, researching, and sharing information about the state of mammals, it contributes to conservation efforts to help maintain these species.

Stephanie Wray

We recently spoke to Stephanie Wray, the new Chair of Mammal Society, who kindly took the time to answer some questions about her background, her ambitions for the charity, and some ways in which you can get involved and support mammal conservation.

 

 


1. First, could you tell us a little bit about the Mammal Society and the important work that it does?

The Mammal Society is a charity which works towards the conservation of British mammals based on sound science. We were started in the 1950s and have always had both a strong academic member base of the ecologists and natural scientists who study our wild mammals, but also a fantastic body of amateur naturalists who are fascinated by mammals and willing to give up their free time to learn more about them and help their conservation in practical ways. Over time our membership has grown to include, for example, ecological consultants who work with protected species, protecting them from development, and many others who just love mammals. Increasingly we are benefiting from support from members of the public who, while they may not be able to devote time to practical projects themselves, care deeply about the British countryside and our iconic mammal species and want to help us to help them. At the moment we are developing exciting projects looking at the conservation of mountain hares, our amazing native hare which turns white in the winter and which may be threatened by climate change, and the harvest mouse, a species of traditional farmland as small as a two-pence piece and increasingly threatened by the way we manage our countryside.

Mountain Hare, Cairngorms by Sorcha Lewis (Mammal Photographer of the Year 2020)

2. From your PhD on brown hares in the 1990’s and a post-doc on Livingstone’s bat on the Comores, to your role as past president of the CIEEM and, most recently, your position as director of Biocensus and founder of specialist consultancy Nature Positive, you’ve had an incredibly fascinating and influential career so far. What attracted you to the position of Chair of the Mammal Society?

I’ve always had a soft spot for the Mammal Society, since my first Mammal Society conference in 1989. It’s where, a couple of years later, I presented my first scientific talk on the results of my PhD research and where I met many other mammal enthusiasts who have remained lifelong friends. Many of the Society’s members, professional and volunteer, have helped me with my research over the years, turning up in fair weather or foul to help me catch and radio-collar mammals to learn more about their habits, collect samples of dropping and other ‘glamorous’ tasks. So I want to be able to give something back, to make sure that the Society continues to grow and acts as an effective, science-backed voice for the conservation of wildlife in the UK. Our members have a huge amount of knowledge and experience and I want to make sure that we can leverage that to have our voices heard and deliver the right outcomes for conservation.

3. Unusually for an ecologist, you also have a Master’s degree in Business Administration. Do you think that marketing, economics, and the social sciences in general have an important role to play in ecology and conservation?

Well, you have done your research – I do indeed! We hear a lot about the bad things that businesses do, but the economic reach, innovation and entrepreneurship of industry can also act as a huge power for good. Businesses are starting to realise that their entire operations depend on biodiversity and that working to protect the natural world is not just a philanthropic exercise, it’s sound business sense. Sometimes how a business affects the environment is very obvious (they may use a lot of water or harvest a wild species) but in many cases it is hidden deep in their supply chains. Let’s say that you are a manufacturer of oat milk. You will have a great narrative around the climate impacts of your product compared to dairy milk, soy and almonds – but what about the biodiversity impacts? If the oats you buy are grown at a factory scale, removing hedges and ploughing up to the field boundaries, with the addition of lots of artificial fertilisers or pesticides, then you will have undone all those climate benefits through your impacts on nature – and the decline in the harvest mouse population would be an indicator of that. Now that is not just a concern to the Mammal Society – it’s a risk to your business in terms of future costs (as the environment becomes more degraded then we lose soil fertility and pollinator species, and yields will fall) in terms of your reputation (we’re drinking oat milk in the first place because we care about the environment) and in terms of your ability to attract investment (the institutional lenders don’t want to be on the wrong side of the next ‘palm oil’ issue). Under that kind of pressure, businesses can be incredibly flexible and develop new approaches, like regenerative farming, which can represent a win-win – a premium product for them, a healthier environment for everyone.

4. Taking on the role of Chair of a charity during a global pandemic must be an exciting yet challenging prospect. What are your hopes and ambitions for the charity over the next few years?

It is certainly an exciting time to take on a new role. Particularly during our first ‘lock down’ in Britain last year I think we all really appreciated our limited time outdoors and took time to enjoy those short nature ‘snacks’. For some that meant spotting wild goats or deer in the car-free streets, for others it may have been a grey squirrel or urban fox in the garden. My hope is that as we recover from the pandemic we don’t lose sight of that link to nature, and that as society moves forward it will be with increased understanding of and respect for the way the natural environment supports and underpins everything we do. My ambition for the next phase of the Mammal Society’s life is to really raise our profile to that of a household name alongside larger charities such as RSPB and WWF. I want to make sure that we develop our communications strategy, and through our website, publications and social media engagement, reach a wider audience and raise the profile of British mammals and their conservation in line with our charitable objectives. I want us to continue delivering the highest quality of scientific research and to proactively engage with government and the media on mammal conservation and management issues to contribute to the delivery of evidence-based policy.

Female Muntjac by Keith Elcombe (Mammal Photographer of the Year 2021)

5. As stated on your website: Britain is now recognised as one of the most nature-deprived countries in the world. Are you broadly optimistic about the future of mammals in the UK?

I think we have to be; the only viable option for human society is to live in harmony with nature. This year is a hugely important one for nature with the COP15 meeting in China in October on the post 2020 Global Biodiversity Framework, and the related COP26 meeting on climate change in Glasgow in November. These will be decisive in setting out international approaches to protected areas and sustainable use of the commodities we harvest from nature. Here in the UK, we have clear commitments arising from our exit from the EU, in the government’s 25 year environment plan, and through measures such as mandatory Biodiversity Net Gain in the forthcoming Environment Bill. All the pieces are there, we just need to commit to putting them together into a coherent protection framework. One quarter of British mammals are currently at risk, but it isn’t too late to bend the curve on extinctions and watch our biodiversity flourish again.

6. Finally, for any of our readers who are wanting to get involved with mammal conservation in the UK, what are the most important things that they can be doing right now?

Firstly (obviously!) have a look at the Mammal Society’s website (https://www.mammal.org.uk/support-us/) and you will find all sorts of things you can do to help from sending us records of mammals you have seen to organising a bake sale (hedgehog cupcakes, anyone?). In your day to day life, here are a few things you might try to help mammals.

  • Garden with nature in mind. If you have a garden, try to leave a wild corner with food for wildlife particularly in the autumn and winter. An open compost heap if you have space is helpful to invertebrates, reptiles and small mammals (but don’t add any cooked food!) If you have a pond, make sure the sides are not too steep or add a ramp to make sure thirsty creatures don’t fall in and drown. Consider leaving food out for hedgehogs (cat food, never milk) or badgers (they aren’t too fussy!) if you are lucky enough to have them. Leave small gaps under fences to make sure hedgehogs and other small mammals can move around. If you don’t have a garden, a window-box or a pot of herbs on the doorstep can provide a source of food for pollinators and contribute to biodiversity.
  • One of the biggest threats to nature is how we manage the countryside and as consumers we can all send a message about what we want agri-business to do. Choose products wisely – is there embedded destruction of the countryside in that breakfast cereal? Write to the supermarket or the manufacturer and ask them how they manage their impacts on biodiversity – both directly and through the ingredients they buy in.
  • Write to your local MP and ask them what they will be doing to make sure that even removed from the EU’s strong environmental legislation, Britain will be a leader in environmental protection. The Wildlife and Countryside Act, which is the key piece of legislation for protecting mammal species such as bats, otters and dormice, is under review this year. Ask your MP to vote to retain and add to the strict protection we have for some mammal species and to prevent it being watered down.
  • And most importantly – just go out there and watch mammals. I may be biased, but for me there is nothing better than being out in the countryside early on a spring morning watching the hares chasing around and knocking seven bells out of each other. You might like to stay up late watching badgers or bats, or enjoy the crazy antics of a squirrel on a bird feeder. It’s important that we engage with nature and encourage our children to do the same. If we don’t see and understand wildlife, we won’t fight for it. And, trust me, we need to fight for it.

You can find out more about Mammal Society from their website and by following them on Facebook and Twitter.

 

No Mow May 2021

Plantlife’s “No Mow May” campaign asked gardeners around the UK to lock up their lawnmower and let the wild flowers in their lawn bloom. This simple change in mowing has been shown to bring huge benefits, providing a feast of nectar for our hungry pollinators.

At the end of May, Plantlife opened its “Every Flower Counts” survey, a fun and easy way to discover how many bees the UK’s lawns can feed. People from all around the country took part, recording the different flowers which had bloomed on their lawn. These results will then be compiled to produce the National Nectar Score.

Image by Antonia Peacock

Here at NHBS we were delighted to take part in No Mow May, with a number of our staff members saying “no” to the mow in order to help our bees, butterflies, and wildlife!

You can find out how we got on below:

Outside the NHBS building

The grass outside the NHBS building was left unmown during May, allowing lots of daises, dandelions and speedwell to bloom. This created a beneficial space for a variety of insects and pollinators.

Image by Antonia Peacock

Nigel

Nigel turned his lawn into a wild haven, allowing an abundance of dandelions and forget-me-nots to blossom.

Image by Nigel Jones

Nigel also contacted the local council, persuading them to set aside an unmown patch of grass at a local cemetery – an area usually mown twice a month from March to November. The photo below shows the contrast between the the unmown area and the area which continues to be mown and strimmed. As shown below, leaving an unmown patch has allowed a number of daises and dandelions to sprout up.

Image by Nigel Jones

Oli

Oli’s garden remains wild year-round, attracting a variety of plants and wildlife. Most recently, his garden saw the arrival of this rather impressive-looking slow worm!

Slow Worm by Oliver Haines

Natt

Natt’s lawn was left unmown during May, with the long grass helping to provide habitat for a variety of different insects.

Image by Natalie Mawson

Elle

Elle’s garden saw the blooming of these stunning buttercups, ideal for pollinators and other wildlife.

Image by Elle Mason

Marie

Marie’s lawn was also left to grow during May, allowing lots of lovely daises to sprout up.

Image by Marie Shute

Angeline

Angeline’s dog Freya enjoyed exploring a field of buttercups which had been left untouched during May.

Image by Angeline Rietveld  

Have you taken part in No Mow May and are keen to learn more about some of your local flora? You can find our ‘Guide to UK Wild Flower Identification’ here.

Author Interview with Sarah Gibson: Swifts and Us

Whirling swifts overhead are evocative of early summer, and their arrival to the UK brings joy to many. In Swifts and Us, Sarah Gibson explores what is currently known about swifts and their ancestry, while also addressing some of the contributing factors to their huge decline over the last few decades. She meets key experts and researchers as well as many determined individuals, all advocating for change to ensure the swifts’ survival.

Sarah Gibson is Press Officer for Shropshire Wildlife Trust, as well as Editor of the members’ magazine. She also regularly writes nature columns for her local magazines and newspapers. Sarah has kindly agreed to answer some of our questions below.

Firstly, could you tell us about where the motivation for your book came from?

I’d become passionate about swifts since moving into a town from the country.  Then I had a long period of illness and would be exhausted after the briefest of conversations and couldn’t even walk up my street – I was so slow I would be overtaken by very old people on Zimmer frames. It seemed as though I’d hit 97 five decades prematurely.

Then I got better and decided it was time to do something new with my life – alongside my now part-time job at Shropshire Wildlife Trust. I knew I could string words together, so decided to research and write a book about swifts to try and inspire others to love and take action for them too.

During your research, did you discover anything especially interesting that you were previously unaware of about swifts?

That hummingbirds are the swift’s closest relatives! Fossil evidence from 52 million years ago found in Wyoming, USA, revealed a bird that is the forerunner of both. The characteristic common feature is a super-strong, stout humerus bone, that would enable the swift to endure and flourish in perpetual flight and the hummingbird to flap its wings 50 times per second as it hovers over flowers collecting nectar. Their shared ancestry seems less surprising when you think about the intense aerial demands of both birds. 

Your book features exceptional and inspirational people that have fought to ensure nest spots are protected and accessible for returning swifts. Do you have any particular highlights or success stories that you’d like to talk about here?

Photograph by Laurent Godel

The Crescent Art Centre in Belfast is a cross-community cultural hub, bringing people together from all backgrounds.  It also has a thriving colony of swifts and when major renovation work began 12 years ago, the architects and builders worked with a local swift champion to ensure that access to the original nesting holes was retained and additional holes provided by integrating nest bricks into the walls. This is a great example of how renovation doesn’t have to lead to ruin for swifts.  It can be achieved, if thoughtfully carried out. This swift colony is now a living emblem of the arts centre and its aspirations – uniting people across boundaries. 

What role can citizen science play in surveying and monitoring swifts?

Photograph by Ulrich Tigges

Local surveys to identify swift breeding sites are very valuable. Knowledge of swift colonies can at times make it possible to work with building owners when renovation works are planned, so that nesting holes can be retained. When the data is fed through to local biological records centres, the presence of swifts in particular areas will be flagged up to planners who will sometimes, but not always make it a condition for development that nest bricks should be integrated into buildings.

The RSPB’s SwiftMapper is a useful tool and you can find out about surveying with local swift groups from Action for Swifts or Swift Conservation.

Habitat destruction, climate change and a stark reduction in their food supply are just a few factors contributing to the decline of swifts over the past 20 years – the odds appear completely stacked against them. Post-research for your book, do you feel any optimism for the future of these incredible birds?

Photograph by Piotr Szczypa

Contemplating the global crisis in nature can lead to despair. Our inability to prevent the destruction of wild habitats and the wild creatures that depend on it strikes deep into our souls, but worrying about the future cripples our ability to act, so I try to live in the present. It is what we do now that will shape the future and we need all of our energy to bring better times.

Climate change is inextricably linked to the degradation of nature. At last, there seems to be a glimmer of awakening at a political level to the fact that nurturing nature is essential for all our sakes. The campaign for 30% of land and sea to be protected by 2030 across the world brings hope but it needs a radical reset of values to be achieved.  All of us though, can do something to help bring it to reality. 

Do you have any current projects or plans for further books that you’d like to tell us about?

I’ve just been down to my local cemetery where there’s a project to turn the unmarked graves area into a wildflower meadow.  The yellow rattle seed we sowed last August is coming up, along with cowslips and violets.  It will be a living memorial for those buried beneath and will attract bees and other pollinators.  I’m also keeping an eye on the eaves of a medieval building managed by the town council. Restoration work on the timbers last autumn included six bespoke swift nest boxes – fingers crossed! 

There will be another book but I haven’t written it yet.  It will explore the connectedness of people with nature but I can’t reveal more just now.

 

Swifts and Us
By: Sarah Gibson
Hardback | Published May 2021 | £16.99

We have a very limited number of bookplates signed by Sarah, available while stocks last.

All prices correct at the time of this article’s publication.