Flower of the Illyrians

Yesterday, 2nd September, was the final field meeting of the year for the Sussex Botanical Recording Society at Chailey Common. Chailey Common is a good example of where conservation grazing has been put into place, in order to keep dominant vegetation to a level that won’t swamp more precious flora. Sheep, ponies and cattle are rotated around the commons in order to control plants such as birch, gorse and bramble that will degrade the quality of the heathland habitat if they get out of control.

It was great to see how this conservation grazing was working. It allows smaller and more fragile wildflowers to grow as well as others that may have been at risk from habitat loss. We recorded a good number of scarce and interesting plants, including Heath Milkwort, Scented Agrimony and Lesser Skullcap.

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Scented Agrimony, with subtly notched petals distinctive of this species.

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A flower of Heath Milkwort, so-called as farmers thought that allowing their cattle to feed on this plant would increase milk yields.

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The minuscule flower of Lesser Skullcap.

However there was one stand-out highlight, and that was a small patch of Marsh Gentians. Gentians are often a favourite of photographers as they have a photogenic beauty. I am not a photographer, but I did try my best with the following shots.

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The Marsh Gentian is quite a locally distributed plant, growing on wet heathlands rather than marshes. It does benefit from grazing, which is perhaps why some of its main strongholds are places like the New Forest and Ashdown Forest.

It is one of a number of Gentian species in the UK, in the genus Gentiana, including Autumn Gentian and Field Gentian. On a global scale it is cosmopolitan, with around 400 species; and some species are known to have been used in herbal medicines for quite a variety of ailments. These range from cancer to malaria to parasitic worms, however studies have been conducted that don’t prove that it has any benefits beyond a placebo effect! Despite this, the genus name Gentiana is in honour of the Illyrian king Gentius, who supposedly discovered the plant’s tonic qualities. What it is definitely known to be good for however, is as a dye, especially the Marsh Gentian.

 

Marsh Gentian is my 500th British plant and although summer is now over and most flowering plants are past their peak, there are still late summer and autumn species in bloom. Some of these I hope to see over the next few weeks!

 

 

 

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BTO Birdcamp 2017 – Part 1

Last weekend I was incredibly lucky to be able to attend the BTO Bird Camp that took place between 26th-28th May based at the BTO headquarters at The Nunnery in Thetford. For young birders aged between 12 and 18 it is a superb opportunity for the future of birding and ornithology to meet like-minded individuals of the same age and to see some fantastic wildlife.

This series of blog posts will be split into 3 parts as I have a lot to write about! This first part will give an introduction to the Bird Camp – including information about the BTO and the sponsors of the event the Cameron Bespolka Trust – and the first evening. In the second part I will talk about the birds and the moths and in the final part I will talk about the brilliant range of dragonflies, some scarce, that we saw.

I am very grateful to the BTO – British Trust for Ornithology – for organising this event. This is the second year this event has been running, and reading the trip reports from last year’s camp I couldn’t wait to apply and fortunately my application was successful. Along with this event the BTO run many others to develop skills in bird identification and nest recording among others. I believe that these events are really important to ensure that our birds are better understood.

Many of the events that the BTO run are intended to improve the public’s skills in bird surveying, often with a particular survey or census in mind. The BTO run many nationwide surveys to improve the knowledge of Britain’s bird life. These include the Breeding Bird Survey (BBS) and the Wetland Bird Survey (WeBS). The BTO is an excellent organisation without which our ornithological fauna would be less well understood and the Bird Camp would not have taken place.

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One of my Cuckoo photos from Thursley Common a couple of weekends ago. The BTO run a Cuckoo tagging project in order to find out more about the lives of these birds, which you can read about here: https://www.bto.org/science/migration/tracking-studies/cuckoo-tracking

As well as the BTO I am very grateful to the Cameron Bespolka Trust for sponsoring the event. Cameron Bespolka was an enthusiastic young birder who was tragically killed in a skiing accident a few years ago, and the trust was set up in memory of him. The trust’s main aim is to inspire young people to enjoy birds and nature. As well as sponsoring this camp, they have done lots of work here and abroad to help young people get interested in the environment around them. You can read more about Cameron, the trust and their aims on their website: http://www.cameronbespolka.com/

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The camp that I had been looking forward to for so long finally came around last Friday. After a 3-and-a-half hour journey to south Norfolk I arrived at just before 6pm shortly after which we had dinner and an introduction to the camp. We also did a little bit of birding around the Nunnery – we recorded a number of common species such as Jay and singing Blackcap. I even had a brief flight view of a Green Woodpecker and an Oystercatcher flew over as well which I wasn’t expecting. Slightly later on we heard a Tawny Owl respond to Louis Driver’s clever wooden owl whistle!

Most of us had an early night to rest before the 4.30 wake-up some of us had! It was clear that there was lots of great birding to come…

 

 

World Wildlife Day – Listen to the Young Voices

Yesterday was World Wildlife Day and the theme this year was ‘Listen to the Young Voices’.

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In December 2013, World Wildlife Day was proclaimed as the third of March, which is the day of signature of the Convention on International Trade in Endangered Species of Wild Flora and Fauna (CITES). The United Nations decided that World Wildlife Day would be celebrated this year under the theme ‘Listen to the Young Voices’ due to the fact that a quarter of the world’s population are aged between 10-24 and as the next generation they need to be encouraged to protect wildlife.

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Thanks to the brilliance of technology corresponding with people a long distance away has become easier than ever before. And given the unfortunate low density of young teen naturalists in the British Isles, this has been instrumental in bringing the future naturalists and conservationists together.

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Last year I decided to set up a Twitter account (@My_Wild_Life) and very soon I was talking to many of the incredible young naturalists I had previously only read about in magazines and online. A ‘group chat’ had been set up specifically for young naturalists and this became a hub of support, learning and conversation. I was over the moon to be involved with such a hopeful and inspiring group of young people who shared my interest.

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Young people are the future. And in a world where we humans are advancing quickly in many ways, the future of nature and the environment needs to be put higher up the agenda. And without young people interested in the natural world and keen to protect it, it is unlikely that the environment will prosper.

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Due to the increasing popularity of social media such as Twitter, there has been a huge surge in the ‘Youth Nature Movement’. The work of top naturalists and conservationists has lead to a significant increase in the number of young people getting involved with nature. It has also given aspiring young people looking for a career in wildlife louder voices, which need to be listened to.

Below is a list of excellent nature blogs by under-twenties that are really worth reading:

Dara McAnulty, Young Fermanagh Naturalist: https://youngfermanaghnaturalist.com/
James Miller, Knee Deep in Nature: http://www.kneedeepinnature.co.uk/
Mya Bambrick, My World of Wildlife: http://myathebirder.blogspot.co.uk/
Josie Hewitt, Josie Hewitt Photography: http://josiehewittphotography.co.uk/
Paddy Lewin, Paddy’s Wildlife Blog: https://paddylewinwildlife.wordpress.com/
Elliot Montieth, Elliot’s Birding Diaries: https://elliotsbirdingdiaries.wordpress.com/
Dawood Qureshi, Heart of Wild: https://heartofwild16.wordpress.com/
Thomas, Exploring Wildlife: https://exploringwildlife.blogspot.co.uk/
Charlotte, That Bird Blog: http://thatbirdblog.weebly.com/
Zach, Year of Nature: https://yearofnature.blogspot.co.uk/
Harry Witts, Harry’s Wildlife: https://harryswildlife.wordpress.com/
Michael Sinclair, Michael Sinclair Photography: https://naturephotographer.co/
Luke Nash, Luke’s Birding Blog: https://lukesbirdingblog.wordpress.com/
Louis Driver, Louis’ Wild Northumberland: https://louiswildnorthumberland.blogspot.co.uk
Jack Dawson, Jack Dawson Wildlife: https://jackdawsonwildlife.wordpress.com/
Alex Bayley, A Whiff of Fox: https://awhiffoffox.wordpress.com/
Alex White, Appleton Wildlife Diary: https://appletonwildlifediary.wordpress.com/
Noah Walker, Walker’s Wildlife Photography: http://walkerwildlifephotography.blogspot.co.uk/
Findlay Wilde, Wilde About Birds: http://www.wildeaboutbirds.blogspot.co.uk

2000 and beyond!

As many of you know, I have been keeping a pan-species list for a year and a half. A pan-species list (or PSL) is a list of all species that you have seen within either the UK or Britain and Ireland. My main target, that I set in the new year, was to get to 2000 species by year-end, which was always going to be a big challenge for me. I started the year on around 1300 species and retrospectively I am very pleased at the number of species I added during the course of the year.

Just a couple of weeks ago I was on the home straight. I needed just 29 species for me to reach the magical number however I was in the last, and generally toughest month due to the lack of many invertebrates. However, I had a field trip planned which would hopefully get me all the way.

On a cold Sunday morning I met several other bryologists (bryology is the study of bryophytes – mosses and liverworts)/naturalists in a car park in the Lewes district of Sussex. We were at Chailey Commons for a meeting of the South East group of the British Bryological Society.

Our first stop on our outing was the short acidic grassland immediately next to the car park. There were a few common grassland species here, including the very familiar Rhytidiadelphus squarrosusor Springy Turf-moss. This species is not only confined to acidic grassland like this but can also be found almost anywhere with short grass. For example it out-competes the grass in our lawn in some places! Once you have seen this species regularly it becomes quite distinctive, it is medium to large sized (for a moss!) with a red stem. It has very short, thin leaves on the stem as well as slightly larger pointed leaves on the short branches and at the apex.

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Springy Turf-moss (Rhytidiadelphus squarrosus)

Another species found in this short grassland was Kindbergia praelonga, or Common Feather-moss. This is another largish moss which, as its name suggests, resembles a feather. Unlike Rhytidiadelphus squarrosus is completely green, including the stem. It has opposite branches with leaves similar in size to those on the green stem. The branches become shorter, like the tip of a feather.

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What I believe to be a frond of Kindbergia praelonga

After examining the grassland, we moved to a small patch of woodland around a quite large but seasonal pond. This pond is one of the few sites outside of the New Forest for Fairy Shrimps, however I needed to have been visiting in summer for a chance to see one of these rare crustaceans.

In this small wood we found a number of common woodland species, including our first liverworts of the outing. The first liverwort I came across was the small but abundant Metzgeria furcata, also known as the Forked Veilwort. This liverwort is very thin and forms small patches on tree trunks with the thalli (the leaves) adpressed to the substrate. It is the most common thallose liverwort and away from the coast, the most frequently encountered Metzgeria species. It also occasionally grows on rocks, although more frequently in the west of Britain where it is generally damper.

Along with that species of Metzgeria we also came across another species of the same genus: Metzgeria fruticulosa, or Bluish Veilwort. This is much less common than M. furcata, and a new species for me. This species is separated from furcata by the gemmae, which is “a small cellular body or bud that can separate to form a new organism”. Metzgeria furcata only produces gemmae rarely in Britain however fruticulosa is almost always gemmiferous, with gemmae located at the tip of the thalli.

We also encountered several patches of the moss Fissidens taxifolius (Common Pocket-moss) on the soil on the steep bank leading down to the pond. The genus Fissidens is a tricky genus for beginners as specimens often need close examination, either in the field with a hand lens or with a microscope. Luckily I was with lots of people much more knowledgeable than myself, so the specimens we found were quickly identified as this species.

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A species of Fissidens from the Cotswolds last year

After recording everything that could be found in that small patch of woodland we headed to a habitat I have never explored before: a WW1 trench! There were a number of very interesting bryophyte species in this trench that was used for training in the Great War, including one of the least common bryophytes of the meeting: Aulacomnium androgynumThe common name of this species is Drumsticks, named after the very distinctive reproductive feature, which comprises of a long stalk with a ball of gemmae at the vertex.

A variety of different mosses and liverworts were not the only new species I found in the wartime trench. There were also a range of ferns growing on the muddy bank and luckily a member of the Sussex Botanical Recording Society, Helen Proctor, was on hand to help me identify a few. Most were common species that I had recorded before, however one was a common species that I hadn’t recorded before! This was the Broad Buckler-Fern, Dryopteris dilatata. Distinguishing this species confidently from other species is possible by looking at the brown, papery scales on the stem. If these scales have a dark centre, then they belong to the Broad Buckler-Fern.

After a thorough exploration of the trenches, we moved on to an area of damp heath. Here there were Sphagnums aplenty! Sphagnums are large mosses which love damp, boggy habitats on the edges of streams and other water bodies as well as in bogs and marshes. The genus is quite easy to identify from other mosses due to its size and elongated, upright shape with a thick capitulum, which is a compact head containing new branches. However, identifying Sphagnums to species level is much trickier! For a confident identification one will need good literature, such as the key in the British Bryological Society’s Mosses and Liverworts of Britain and Ireland: a field guide. Fortunately there was also a Sphagnum expert with us who was able to verify what we found. I was quite pleased at the number of Sphagnum species we recorded on the outing: compactum, fallax, capillifolium, papillosum, palustre and fimbriatum. However, this is only a small fraction of the species of Sphagnum in the UK!

While we were examining the Sphagnum one of the members of the field outing flushed a medium-sized, stocky bird from the leaf litter. It flew high in the direction of the road. I stared at it as it flew off with my mouth agape for a fraction of a second, before I exclaimed: Woodcock! These plump wading birds are related to the Snipes, however they are unusual in that they are nocturnal; they often feed away from water (on moist pastures for example) and they roost in woodlands. Woodcock was one of my bogey birds: species that I really should have seen but hadn’t. I have traipsed through many woods in my local area hoping to disturb one from its daytime rest, which is by far the easiest and most common way to spot a Woodcock, without any luck. Therefore I was exceedingly pleased to have finally come across one.

Soon after we flushed the Woodcock, it was time for me to head off. When I arrived back home I counted up the number of new species I had found and I was pleased that I had just made it to 2000, with Woodcock being species number 2000! Now it is time to think of a new target to keep me motivated to find more interesting wildlife. My next PSL target is to reach 3000 species by my 15th birthday in August 2018.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Starting a Herbarium

For centuries botanists have been collecting specimens of the plants they observe. If done correctly, botanical specimens can last for a very long time. For example, the Angela Marmont Centre at the Natural History Museum has specimens collected by Charles Darwin and Alfred Russel Wallace. Specimens can be very useful in documenting regional variation and how a species has changed over time.

Last weekend I was out with the South-east branch of the British Bryological Society recording mosses and liverworts at Devil’s Dyke, north of Brighton. As is often the case, however, one of the highlights of this field trip was in fact not to do with the subject of our search! Once we had passed through a section of Ash woodland on our walk we came to a lovely crystal-clear chalk pond. Despite few bryophytes around the pond’s edges the pond was full of life, including several water plants. Most common was the Ivy-leaved Duckweed, Lemna trisulca, and there were also a few Potamogeton natans plants as well. However what really caught our eye was a very beautiful looking pondweed with a lovely texture and colour that was unfamiliar to me but not for the other members. They identified the pondweed as Groenlandia densa, otherwise known as the Opposite-leaved Pondweed.

Groenlandia densa is not a very common species and is sadly declining in Britain. This is mostly due to urbanisation, and therefore it is missing from the vast majority of London. It has also declined due to a factor known as eutrophication which is the presence of excessive nutrients in a water body. This is most commonly caused by run-off from the nearby land, and it creates a dense growth of plant life which can potentially displace species that cannot compete. Due to this decline, it was suggested that I collect a piece of the pondweed, in case it becomes a very rare species and little material for herbariums could be found without damaging a population.

It is easy for anyone to start preparing plant specimens; little specialist equipment is needed. This is all that is needed for a beginner to make a good quality specimen:

  • newspaper
  • heavy books
  • a dry environment
  • good quality card
  • PVA glue
  • printed labels

And these are the steps I went through to create my pondweed specimen:

  1. Lay out the specimen on half of a full double page spread of newspaper in a way that should show as many features as possible.
  2. Once the plant is in a good position, fold over the other page of the double page spread.
  3. Add some more sheets of newspaper to the top and bottom of the folded newspaper with the specimen inside.
  4. Put the newspaper on a hard, flat surface.
  5. Place a few heavy books on top of the newspaper.
  6. Leave the specimen until it is sufficiently dry and flat, this could take a few weeks or only a few days, but don’t overdo it and don’t leave it for too short a period.
  7. Once the specimen is ready carefully take it out from the newspaper and lay it out on your piece of card making sure that it shows the necessary features. Remember to leave room for a label!
  8. Using PVA glue or any other glue recommended by botanists, stick the specimen down on the card. PVA glue dries clear so don’t worry too much if you get some on the card where you don’t want it.
  9. Fill in a label. Ideally the label should show as much information about the plant as possible: species; family; collection number; locality (grid reference, name of site, nearest town, county etc.); habitat; collector’s name; date of collection; and also note down features of the plant that may have been lost in the drying process.
  10. Finally, and optionally, you could also attach a small paper envelope to the specimen containing dried fruit/seeds that would have been ruined in the pressing process.

And there you have your specimen! This is what my pondweed looked like before and after collecting, pressing and mounting:

This is not the only specimen I have so far collected. At the beginning of the summer, as part of my interest to record the slightly trickier-to-identify species, I collected a couple of Bramble (Rubus) species. These were the first specimens I collected and I was quite pleased with the result. However, they weren’t good enough. After I had dropped them off at the Angela Marmont Centre at the Natural History Museum, Dr David Allen kindly looked at them for me. Unfortunately they were lacking some necessary features vital in identification, such as a section of the first year growth. Using his advice, I went out recently and collected a specimen of a particularly late-flowering Bramble, and this was the result:

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I will also attach with the specimen a couple of photos of the plant before it was collected:

This shall hopefully even further aid identification and maybe contribute to the understanding of this poorly known group.

Many groups are overlooked, because they are tricky to identify or they are too small or they need specialist equipment to collect. Some examples are dandelions, a nightmare of identification; desmids, microscopic algae; and parasitic wasps, also very difficult to identify. This results in these groups being little-known as few people are willing to try to find and identify them. This leads to under recording of species that are probably common, creating deceptive data. One of my aims is to try and master these very difficult groups and hopefully make a difference.

Ouzels and Sprites

Last weekend was a great one for birding. Saturday started drizzly and it continued like that for the rest of the day, but when I saw news of a Yellow-browed Warbler just 10 minutes away I couldn’t resist going for this scarce vagrant. When we arrived at Bewbush West Playing Fields it was cloudy and miserable. We could tell that this wasn’t the most likely destination for most birders, it was simply a few football pitches, a tiny section of woodland and a hedgerow.

We followed a footpath adjacent to the playing fields, as that was where the Yellow-browed Warbler was seen. Along the whole route I played the call of this species, hoping that the lost bird would call back and reveal its presence. We had no luck for the first fifteen minutes, with only Blue Tits and Robins calling from the trees. However, as we reached a large, dense, berry-laden Hawthorn bush, my mum and I both heard the call. ‘Tseeweest, tseeweest’. That was the bird! I played back the call several times and received a couple more faint responses, but that was it. There was no sign of the bird, it was obviously well hidden inside the dark, dark hedge.

Yellow-browed Warblers are birds that breed in Siberia and winter in South-east Asia, but hundreds each year perform ‘reverse migration’, that is migrating in the wrong direction, and find themselves here in Britain. This is the perfect time of year for these Siberian ‘sprites’ to turn up on our coasts, with a maximum of 600 on one day earlier this year. All records are pretty much confined to the east coast, however, with few making their way inland. This year has so far been a bumper year for them, with 8 being seen in Surrey at the time of writing. Considering that there haven’t been any confirmed records for at least 2 years this is amazing!

The next day the weather was much more favourable and my dad and I made our way to the brilliant Ashdown Forest to see how Autumn was getting on. There had been 12 Ring Ouzels reported during the last two days and these are another species I had yet to see in Britain and indeed the world. When we arrived in the car park we could simply hear autumn calling from the trees: there were Chaffinches everywhere! Given this being a bumper year for beech mast, one of their favourite foods, I wasn’t too surprised to see lots. However, I think 69 is a pretty good total!

Continuing along the tarmac road I heard a distant Pheasant and party of Blackbirds in a dense holly bush. For a moment I thought I could hear a faint ‘chack’ of a Ring Ouzel, but I couldn’t be sure. Further along the road we came to a more open area with gorse and some isolated pines. Ahead of us on the path we could see a flock of about 20 Chaffinches; however they were very flighty and I couldn’t tell if there were any Brambling among them. It didn’t sound like it, no Brambling calls stood out as the flock flew over our heads and into some tall pines at the bottom of a short slope.

A short while later, as we were under the cover of some tall pines and beech trees again, I spotted a flock of thrush-size birds flying around a small Rowan. They weren’t close and even through my binoculars I couldn’t tell if they were Blackbirds or Ring Ouzels; however it seemed unlikely that Blackbirds would form such a large flock. Retracing our steps we managed to find a path that lead down towards the Rowan for us to get a closer look and confirm the identity of those birds. It was a steep but easy descent, in one place we had to move quickly as we came across a huge Wood Ant nest!

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Formica rufa, Southern Wood Ant, nest

The number of birds around us was incredible. A tit flock made their way through the thin birch trees, hanging from the flimsy twigs. It was mainly made up of Long-tailed Tits, however there were also Blue, Coal and Great Tits along with seven Chiffchaffs. Several Redwings passed overhead and there were even more Chaffinches and Goldfinches calling from above.

We soon got to a point where we could see the bush where we had seen the Ring Ouzels feeding. There was clearly a lot of activity on the small Rowan and I was pleased to see, through my binoculars, that they were definitely Ring Ouzels! They were very busy feeding on the ripe red berries, along with many Chaffinches. Three Bramblings were also a nice surprise feeding on the berries, they are my first this winter and always great to see. This year I am trying to attract them in to our garden, but there hasn’t been much luck yet unfortunately.

Ring Ouzels are migrants that breed here in the UK in hilly and mountainous open areas. They don’t usually breed in South-East England so this time of year when they are passing through on their way to their wintering grounds is the best to see them. They are similar in appearance to Blackbirds being primarily black, however the males are easy to tell apart due to the bright white crescent on the breast. All genders and ages have this white crescent however it is duller in the females and especially so in juvenile birds. In cases where the crescent is faint, then the next best method of identification is looking at the wings. In Ring Ouzels, the wing is paler than the rest of the body and almost appears translucent, whereas in Blackbirds they are completely black in the males or uniformly dark brown.

Ring Ouzels are sadly declining in the UK and they have been given the red status. However there isn’t a clear cause of the decline and there are several groups working on researching this species and finding out why populations have decreased so much. However, the least numbers of birds have been recorded after warm summers, suggesting that a lack of food might be the problem. With an ongoing trend of warm weather due to global warming it is likely that the decline will continue.

Worms from the depths…

Last weekend, on the way back from a great stay at Portland Bird Observatory, I met Tony Davis and Josie Hewitt in a small car park in the New Forest. Our aim was to find as many rare plants as possible and we did well, finding really uncommon species such as Yellow Centaury, Pillwort and the delightfully named Duck-potato. Below are a few photos of the plants we managed to record.

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Autumn Lady’s-tresses

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Pillwort, this is actually a fern and reproduces using spores!

Despite seeing over 30 new species for my pan-species list that day my highlight was actually an annelid worm! I don’t often look at annelid worms (which are mostly earthworms) as they are not the most exciting creatures in my opinion and I find them very tricky to identify. However the species I added was far from boring!

To find this species, we stood in a pond.

We didn’t have to do anything else, just stand in the pond and wiggle our feet. It wasn’t long before I spotted a long dark creature swimming towards me like an eel on its side. It twisted through the water and came right up to my boot before swimming off. Then Josie spotted another at my heel. There were several of them, twisting through the water weeds with elegant wavelike movements.

This part of the New Forest is excellent for this species of annelid worm, the Medicinal Leech. This is due to the number of ponies providing the leeches with lots of food! Many leeches are terrestrial, however some, like this species, prefer to inhabit freshwater and are adept at swimming. The Medicinal Leech is often mistaken for the Horse Leech, which the leeches in this pond were at first thought to be. Although they appear very similar in appearance, they have very different prey preferences. Despite the name, Horse Leeches can’t penetrate the tough skin on mammals and therefore cannot feed upon their blood. Instead they choose to eat much smaller prey, such as snails and earthworms, both in the water and out. Medicinal Leeches are able to bite tough skin and their main food sources are cattle and horses. However, they also feed on frogs and sometimes even humans!

Unfortunately, these fascinating invertebrates are one of the few I know to have an IUCN designation worse than Least Concern. Most are Not Evaluated or Data Deficient and the species with enough research to provide details on the fluctuations and size of populations are often not too rare. They are classified as Near Threatened despite the population trend – among other things – being unknown. Their main threats are local collection for medicinal use; loss of habitat; and decline in one of their main prey items, frogs.

Below are a few photos I was able to take of the leeches that swam towards us:

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