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Duerden Cormack

@duerden

Glos pan-species lister living in Cambs. Research Assistant at RSPB Hope Farm. https://panspecieslisting.com/view-list.html?list_id=50250

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10.11.2024
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Latest posts by Duerden Cormack @duerden

There are normally three characters on the nasal saddles of these French Tufted Ducks. One in the middle, two on the side. Yours could be something like "FB=" but pictures from other angles might confirm

05.03.2026 11:56 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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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

01.03.2026 18:16 ๐Ÿ‘ 9 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
The Celtic Ghost Millipede (Psichrosoma cf. breuili)

The Celtic Ghost Millipede (Psichrosoma cf. breuili)

The Ghost Slug (Selenochlamys ysbryda)

The Ghost Slug (Selenochlamys ysbryda)

Daudebardia rufa

Daudebardia rufa

Habitat for Daudebardia rufa

Habitat for Daudebardia rufa

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

28.02.2026 14:55 ๐Ÿ‘ 20 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
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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 ๐Ÿฆ @rspbscience.bsky.social

20.02.2026 17:34 ๐Ÿ‘ 25 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Should be Ouse Washes!

08.02.2026 22:22 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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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

08.02.2026 20:23 ๐Ÿ‘ 14 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Yes that makes sense, great video

01.02.2026 09:48 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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I'm reading Bird's Nests (Bruce Campbell, 1953) ahead of spring and it contains this photograph. No location but the background trees look shredded to me

01.02.2026 07:49 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

You were right about it being from Blunham! First resighting since being ringed there January 2024

11.01.2026 19:09 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

I've had one at WWT Slimbridge that had been ringed in Shropshire so you never know! I think it's Project Penelope, will send it off later

11.01.2026 14:01 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Ferruginous Duck at Diddington Pits. Just as pleased to get this colour-ringed Wigeon on the ice! @cambsbirdclub.bsky.social

11.01.2026 12:30 ๐Ÿ‘ 14 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Glad to hear Jamie!

10.01.2026 18:49 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Cheers Jon ๐Ÿ˜

10.01.2026 14:53 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

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

10.01.2026 12:17 ๐Ÿ‘ 18 ๐Ÿ” 1 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
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Now redhead Smew

10.01.2026 11:31 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Also female Scaup

10.01.2026 10:20 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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@birdguides.bsky.social

10.01.2026 10:16 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

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

10.01.2026 09:53 ๐Ÿ‘ 13 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
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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!"

04.01.2026 09:05 ๐Ÿ‘ 68 ๐Ÿ” 29 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 2
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Here you are Mark, they got back to me very quickly! Happy New Year

31.12.2025 22:53 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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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

31.12.2025 16:29 ๐Ÿ‘ 12 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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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

30.12.2025 13:38 ๐Ÿ‘ 12 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Merry Christmas Ian!

21.12.2025 21:15 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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There were a few Dun Sentinels amongst the driftwood/rotting vegetation. I found them new to the county at Saul Warth in winter 2023 so it looks like they are established here now.

21.12.2025 15:13 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

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

21.12.2025 14:47 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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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

15.12.2025 17:41 ๐Ÿ‘ 9 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

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

07.12.2025 14:34 ๐Ÿ‘ 3 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

The Caspian Gull #UKBirding

24.11.2025 16:13 ๐Ÿ‘ 7 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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A (the?) female Ferruginous Duck is on this pit at Diddington. Also a 2nd winter Caspian Gull @cambsbirdclub.bsky.social #UKBirding

24.11.2025 13:07 ๐Ÿ‘ 8 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

Yes, perfect conditions today. Hadn't heard about the grebe so it was a nice day out. The divers were feeding very actively on the far side, going missing for quite long periods

08.11.2025 18:36 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0