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Reposted by Duerden Cormack

James McCulloch @jamesimcc.bsky.social · 17/09/2026

New species now out in @soilorganismsj.bsky.social! soil-organisms.org/SO/article/v... The latest addition to the UK's springtail fauna: Entomobrya terraeincognitae sp. nov. I found this species on fieldwork for my PhD @sangerinstitute.bsky.social at the Cambridge botanics. 🧵

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Jo Parmenter @jo-the-botanist.bsky.social · 19/07/2026

#NorfolkFloraGroup visited #RSPB 's Hope Farm yesterday- thank you so much @duerden.bsky.social for showing us around and answering lots of questions. We made over 300 records, and were especially pleased to see broad-leaved spurge and slender tare, amongst many other lovely plants.

the warty fruits of Euphorbia platyphyllos

a surprise find of sand lucerne Medicago nothospecies varia - a new hectad record

Chenopodium strictum - new for the hectad

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Duerden Cormack @duerden.bsky.social · 24/06/2026

Two new records for RSPB Hope Farm this week. First, what I think is Galium × ⁠pomeranicum the hybrid between Hedge Bedstraw (G. album, left) and Lady's Bedstraw (G. verum, right). The Hedge Bedstraw especially has become quite dominant in these sown, in-field strips. (1/2)

Galium × ⁠pomeranicum between its parents, G. album and G. verum

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Duerden Cormack @duerden.bsky.social · 18/06/2026

Trachypepla contritella, the Kiwi Enigma, has turned up at RSPB Hope Farm. Perhaps a slight (15km) range expansion #TeamMoth

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Duerden Cormack @duerden.bsky.social · 16/06/2026

Heath Snail, Knapweed Broomrape, Field Fleawort, and Bastard-toadflax and it's specialist shieldbug Canthophorus impressus on Therfield Heath, Herts today #Pan-speciesListing

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Duerden Cormack @duerden.bsky.social · 31/05/2026

A few nice finds from Woodwalton Fen, Cambs this week: the King Diving Beetle Dytiscus dimidiatus, the ant-mimic jumping spider Synageles venator, and (reintroduced) Fen Violet! #Pan-speciesListing

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Duerden Cormack @duerden.bsky.social · 25/05/2026

I have been trying to identify some roadside cereals today but am a bit confused about Barley taxonomy! (IDs in ALT text) 1/2

Roadside escapes. I think these are (L-R) Triticale x2 and Spring Barley?

I think these are (L-R) Bread Wheat, Triticale x2, Winter Barley x2, Spring Barley

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Duerden Cormack @duerden.bsky.social · 23/05/2026

Yellow-juiced Poppy, Papaver lecoqii, at RSPB Hope Farm this week.

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Duerden Cormack @duerden.bsky.social · 23/05/2026

Bird's-foot Sedge was a satisfying chance find in Cressbrook, Derbyshire recently!

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Duerden Cormack @duerden.bsky.social · 12/05/2026

Nesting season is well under way at RSPB Hope Farm, many of these eggs have hatched (or been predated) by now - Linnet, Starling, Jackdaw, and Blackcap #NestRecordScheme @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 12/05/2026

Judging by this small patch at RSPB Hope Farm, you can appreciate how Shepherd's-needle was once a serious arable weed! #WildflowerHour

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Vanna Bartlett @vannabartlett.bsky.social · 12/05/2026

After months of work my Norfolk Pseudoscorpion guide for @norfolknats.bsky.social is now on the website free to see/download. Covers 20 species recorded in Norfolk so hopefully useful for other areas of UK. norfolknaturalists.org.uk/wp/wp-conten...

Dendrochernes cyrneus, a large pseudoscorpion with robust shiny, blackish claws on a piece of tree bark.

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Duerden Cormack @duerden.bsky.social · 03/05/2026

Oxyloma sarsii is supposed to be a rare species of broadland and fen but it turns out to be abundant at this dual carriageway mitigation pit in Cambs! Always worth double checking these things #Pan-speciesListing

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Sophie Mott @sophiemott93.bsky.social · 25/04/2026

Will be buzzing if anyone can confirm if this is a Blue-headed Wagtail (2nd year female?). Private site in Huntingdon this evening 😃 @cambsbirdclub.bsky.social #UKBirding

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Duerden Cormack @duerden.bsky.social · 23/04/2026

Adder's-tongue was a surprising first record for RSPB Hope Farm this week! 73 plants near a pond in old permanent pasture. The grazing regime has been relaxed in the last couple of years which could explain why it has not been found before.

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James Harding-Morris @jameshardingmorris.bsky.social · 11/04/2026

It's not often you see two new fish in a day, let alone two new new non-native invasive fish. Following on the from the Sunbleak netted earlier, I also saw Topmouth Gudgeon, Pseudorasbora parva, a species in the process of being eradicated from Britain.

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Duerden Cormack @duerden.bsky.social · 09/04/2026

This Ring Ouzel dropped vertically out of the sky into the tallest elm on this ridge at RSPB Hope Farm today. A nice one for #PWC2026! @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 01/03/2026

It was nice to spend some time watching the Black-tailed Godwits near Over today. I counted 973 and managed to read a few colour-rings @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 28/02/2026

Last weekend, @bsbicountries.bsky.social and I made the "pan-species listing pilgrimage" to southeast Wales to meet Christian Owen and see all the amazing soil creatures there! @panspecieslisting.bsky.social

The Celtic Ghost Millipede (Psichrosoma cf. breuili)

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Richard D. Gregory @richgreg3.bsky.social · 20/02/2026

Great winter bird count with the team at @rspb.bsky.social Hope Farm this morning - impressive numbers of farmland birds - grey partridge, corn bunting, reed bunting, yellowhammer, linnet, skylark, fieldfare, snipe, kestrel & a merlin flyby 🐦 @rspbscience.bsky.social

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Duerden Cormack @duerden.bsky.social · 08/02/2026

Successful day reading Whooper rings in the Fens today. @birdergirl.bsky.social's Tundra Bean Geese still at RSPB Ouse Fen were a good bonus! @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 11/01/2026

Ferruginous Duck at Diddington Pits. Just as pleased to get this colour-ringed Wigeon on the ice! @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 10/01/2026

For clarity, at Diddington this morning: drake Ring-necked Duck, female Scaup, redhead Smew, 2 Pintail, 2 R-c Pochard, 380+ Tufted Duck, c.500 Pochard, 168 Teal, 10 Goldeneye, 350 Wigeon. Great birding! @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 10/01/2026

Dake Ring-necked Duck at Diddington Pits. Hundreds of Athyas to scan through still, 500+ Pochard easy @cambsbirdclub.bsky.social

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Mark Avery @markavery.bsky.social · 04/01/2026

Sunday book review: Pan-species Listing by @graemelyons.bsky.social Publisher: @pelagic.bsky.social Review: markavery.info/2026/01/04/s... "Hardly anyone has the knowledge to write this book & even fewer could write it so well!"

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Duerden Cormack @duerden.bsky.social · 31/12/2025

The 3 Bewick's Swans, Red-breasted Merganser, and Common Scoter were great to see at Grafham today. Best of the rest were a 1st winter Mediterranean Gull and a German-ringed Caspian Gull X2F1 @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 30/12/2025

On a wild goose chase today, checking the local Greylags flocks. Best so far is a Pink-footed Goose at Cow Lane Gravel Pits, Godmanchester. Eight Goosander here too @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 21/12/2025

c.900 Wigeon, 1500 Teal, and 35 Pintail at Purton this morning. Also 2 Rock Pipit and a Yellowhammer which I don't think I have seen in the Severn Vale before #GlosBirds

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Duerden Cormack @duerden.bsky.social · 15/12/2025

Finally managed to get within "colour-ring readable" distance of some Whooper Swans in the Fens today. 8 rings read which was about 1 per 100 birds! @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 07/12/2025

Male and female Goosander at Diddington Pits this morning. Also 2 Green Sandpiper, and c.400 each Wigeon and Coot @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 24/11/2025

A (the?) female Ferruginous Duck is on this pit at Diddington. Also a 2nd winter Caspian Gull @cambsbirdclub.bsky.social #UKBirding

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Duerden Cormack @duerden.bsky.social · 08/11/2025

Red-necked Grebe and two Great Northern Divers from Mander car park, Grafham Water @cambsbirdclub.bsky.social

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Duerden Cormack @duerden.bsky.social · 01/11/2025

First winter Scaup at Diddington Pits this afternoon. A different individual to the Brampton bird last week @cambsbirdclub.bsky.social #UKBirding

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Duerden Cormack @duerden.bsky.social · 24/10/2025

Sminthurinus elegans and Sminthurides signatus hiding in a mossy corner of the garden at RSPB Hope Farm today! #Springtails #Collembola

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Duerden Cormack @duerden.bsky.social · 27/09/2025

A day out in Manea with the Cambs BSBI group today. Pictured are Foliage Beet growing as a weed of a Beet crop and Pumpkins (Cucurbita pepo) persisting in a cereal crop. A Whinchat, a Stonechat, and 7 Ruff among Lapwings were the best of the birds @cambsbirdclub.bsky.social #Pan-speciesListing

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Duerden Cormack @duerden.bsky.social · 19/09/2025

There were so many flea beetles on the bramble at Clopton, Cambs, today that is sounded like rain when you walked past and disturbed them! There must have been several thousand. I have keyed them to Batophila aerata

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Duerden Cormack @duerden.bsky.social · 07/09/2025

A passage Spotted Flycatcher at RSPB Hope Farm, Cambs, earlier this week @cambsbirdclub.bsky.social #UKBirding

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Duerden Cormack @duerden.bsky.social · 05/09/2025

They have turned up at RSPB Hope Farm this year too 😁

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Duerden Cormack @duerden.bsky.social · 26/08/2025

Hi @britishspiders.bsky.social @graemelyons.bsky.social, I found this Xysticus at Dungeness last weekend in the short turf near the bird obs. It looks like an ok match for X. acerbus to me but I can't see any other records for Kent. What do you think?

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Duerden Cormack @duerden.bsky.social · 17/08/2025

I learnt a lot today on a great course on willows run by Brian Eversham at the local Wildlife Trust reserve in Cambourne. Some highlights below:

The underside of the bark of Purple Willow (Salix purpurea) is bright yellow

The hybrid between White Willow and Bay Willow, Ehrhart's Willow (S. x ehrhartiana)

The hybrid between Osier and Grey Willow, Silky-leaved Osier (S. x holosericea)

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Duerden Cormack @duerden.bsky.social · 17/08/2025

Hi @bramblebotanist.bsky.social, this bramble looks different to the usual R. ulmifolius to me. I don't suppose it is something recognisable? In Cambourne, Cambs, today.

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James Harding-Morris @jameshardingmorris.bsky.social · 07/08/2025

It’s the big day! After four years of research, writing and editing (and procrastination, terror and imposter syndrome), Endemic has now been released to the world.

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Bucktonbirder @bucktonbirder.bsky.social · 31/07/2025

Excellent start to the ringing season at Clopton, South Cambridgeshire- 500 warblers from 6 visits with record numbers of Sedge & Reed Warblers. Willow, Grasshopper, Garden and Lesser Whitethroat increasing and first passage Redstart yesterday. @CambsBirdClub

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James Harding-Morris @jameshardingmorris.bsky.social · 31/07/2025

This feels like the perfect post to reply to and announce this - but my book, Endemic: Exploring the wildlife unique to Britain, which includes a chapter on the No Parking Whitebeam, comes out a week today. share.google/Rgyzzyr777Hi...

share.google

Endemic

Meet the rare, obscure and utterly British species found nowhere else on earth.Around 70,000 species call Britain home, but how many of them can be found here a…

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British Wildlife @britishwildlife.bsky.social · 20/06/2025

Our June issue is out! Topics this time include the Planning and Infrastructure Bill, twenty-five years of RSPB Hope Farm, fifty years of legal protection for bats in Britain, a history of Munsary Peatlands, and Pine Martens in the New Forest. For more, see www.britishwildlife.com/back-issues/...

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Duerden Cormack @duerden.bsky.social · 07/07/2025

Nice day in the Brecks yesterday! #Pan-speciesListing

Musk Beetle and Large-flowered Hemp-nettle

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A Naturalist Abroad @anaturalistabroad.bsky.social · 02/07/2025

A visit to the RSPB's Hope Farm in Cambridgeshire courtesy of @duerden.bsky.social to check out some Verbascums led to an opportunity to get photos of Broad-leaved Spurge (Euphorbia platyphyllos) for my website. Now a rare and declining species in East Anglia and a new species for me.

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Duerden Cormack @duerden.bsky.social · 18/06/2025

Another day, another fish. This time a Bleak that I managed to catch from the Ouse in Huntingdon before my pond net broke! #Pan-speciesListing #YearofFish

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