Trektellen.org's Avatar

Trektellen.org

@trektellen

With every year 100,000+ observation hours by 1000s of observer Trektellen is the largest public database of migration / seawatch counts and ringing results.

268
Followers
42
Following
7
Posts
19.11.2024
Joined
Posts Following

Latest posts by Trektellen.org @trektellen

Post image

MASSIVE BUMBLEBEE MIGRATION! Yesterday, bird migration hotspot Breskens, the Netherlands, counted ~1000 migrating bumblebee queens in a SINGLE HOUR (trektellen.nl/count/view/1...).

More on this extraordinary phenomenon: besjournals.onlinelibrary.wiley.com/doi/10.1111/...
@trektellen.bsky.social

06.03.2026 08:55 πŸ‘ 15 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

Okay. We are now blocked by Barry. Very strange. If someone knows what is going on, I really would like to understand. 😳

17.06.2025 07:14 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Its not okay. You complain about us and I don't understand. So we want to help you forward.

16.06.2025 19:21 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I understood Clive send you a message a few days ago (as a quick reply on your request) that he will set the site up but that he wasn't able to do so during the weekend. Sorry, we we are all volunteers doing our best. I am not sure why this post here is needed πŸ™

16.06.2025 19:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I didn't see any requests. Can you please forward me your conversation? gerard at Trektellen.nl

16.06.2025 17:12 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Who did you request for a that new site? And what was the answer?

16.06.2025 16:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Post image

Some great seawatching today, with totals now posted on @trektellen.bsky.social

08.05.2025 20:21 πŸ‘ 10 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
Post image

Most of the day coverage of the sea, with Bar-tailed Godwits picking up this afternoon and by the end of the day a great total of 3687 had flown east. Totals on @trektellen.bsky.social #kentbirding

25.04.2025 20:15 πŸ‘ 12 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
Post image

Vol de Nuit : Publication d'un Γ©tat des lieux et comparaison de matΓ©riel pour le suivi national de la migration nocturne par acoustique passive πŸŒ™

#lpo @mnhn.fr @trektellen.bsky.social #nocmig #bioacoustics

02.04.2025 11:44 πŸ‘ 6 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0
Woodchat Shrike, Lanius senator, ΞšΞΏΞΊΞΊΞΉΞ½ΞΏΞΊΞ΅Ο†Ξ±Ξ»Ξ¬Ο‚

Woodchat Shrike, Lanius senator, ΞšΞΏΞΊΞΊΞΉΞ½ΞΏΞΊΞ΅Ο†Ξ±Ξ»Ξ¬Ο‚

Eastern Bonelli's Warbler, Phylloscopus orientalis, Ξ‘Ξ½Ξ±Ο„ΞΏΞ»ΞΉΞΊΟŒΟ‚ Ξ’ΞΏΟ…Ξ½ΞΏΟ†Ο…Ξ»Ξ»ΞΏΟƒΞΊΟŒΟ€ΞΏΟ‚

Eastern Bonelli's Warbler, Phylloscopus orientalis, Ξ‘Ξ½Ξ±Ο„ΞΏΞ»ΞΉΞΊΟŒΟ‚ Ξ’ΞΏΟ…Ξ½ΞΏΟ†Ο…Ξ»Ξ»ΞΏΟƒΞΊΟŒΟ€ΞΏΟ‚

Day 2 of Spring 2025.
The rain cut our season 1 round short, but we still managed to get things started and had 38 birds from 14 sps. The Willow & E Subalpine Warbler were the most common.
Daily totals at @trektellen.bsky.social: www.trektellen.nl/count/view/1...

30.03.2025 14:28 πŸ‘ 6 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1
Post image Post image

We slightly changed the position of the photos on the count page. We hope you like this better then the previous position in the side bar.

Looking forward to your flight-shots!

21.03.2025 16:51 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Video thumbnail

Spare a minute of your time to watch this short summary of what @batumiraptorcount.org does!πŸ™

Please consider supporting us: www.batumiraptorcount.org/support πŸ€

#Ornithology #Birds #RaptorResearch #CitizenScience #BirdsOfPrey #BirdMigration #Crowdfunding @trektellen.bsky.social

07.01.2025 16:03 πŸ‘ 10 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0
Preview
Trektellen.org

Qui ho havia de dir πŸ‘‰10.000 hores desprΓ©s, 110.100 ocells de 130 espΓ¨cies 🀯🫣hem detectat durant les nits #Solsona #nocmig #SolsonaCastellvell des del 2020 @ICOcells @trektellen trektellen.nl/site/totals/28…

17.11.2024 14:02 πŸ‘ 4 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0

The ease of inputting data and interpreting it wouldn't possible without the brilliant Trektellen website
bsky.app/profile/call...

31.12.2024 16:23 πŸ‘ 6 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Preview
Camperduin 2024/12/31 - Totals: 1397 individuals, 14 species, 3:00 hours

Cduin: december 2024 staat online // december 2024 is online

trektellen.nl/count/view/4...

31.12.2024 13:59 πŸ‘ 6 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Do you count seabirdmovements also in a structural way? If so, would you be interested to join Trektellen? I can send you more info if you want.

31.12.2024 16:28 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Impacts of highly pathogenic avian influenza on seabird populations in the North Sea are detectable in sea-watchers’ migration counts Sea-watching counts provided evidence of declines in abundance of four seabird species during autumn migration, which were consistent with the timing of highly pathogenic avian influenza (HPAI) out...

Like London buses, my second paper published in the space of a week! Working on the (substantial) impacts of HPAI on seabirds, it was fascinating to find that population changes in some of the hardest-hit species are reflected in @trektellen.bsky.social seawatch counts. dx.doi.org/10.1080/0006...

27.12.2024 08:26 πŸ‘ 23 πŸ” 6 πŸ’¬ 0 πŸ“Œ 2
Great Skuas
(c) Rob Farrow
https://commons.wikimedia.org/wiki/File:Two_Bonxies_(Great_Skuas)_in_flight_-_geograph.org.uk_-_6889585.jpg

Great Skuas (c) Rob Farrow https://commons.wikimedia.org/wiki/File:Two_Bonxies_(Great_Skuas)_in_flight_-_geograph.org.uk_-_6889585.jpg

Great new paper #BirdStudy
Bird flu mortality reflected in #seawatching counts in @trektellen.bsky.social

Impacts of highly pathogenic avian influenza on seabird populations in the North Sea are detectable in sea-watchers’ migration counts
www.tandfonline.com/doi/full/10.... #ornithology #ukbirding

24.12.2024 15:59 πŸ‘ 45 πŸ” 19 πŸ’¬ 2 πŸ“Œ 4
Little Auk

Little Auk

Kittiwakes

Kittiwakes

Great Northern Diver

Great Northern Diver

Little Auk

Little Auk

It was good to see a few Little Auk passing the Lincs coast last week, even if only a fraction of the counts recorded further north! A decent supporting cast too, with divers, ducks and kittiwake on the move. Full counts from Mablethorpe on @trektellen.bsky.social

26.11.2024 20:15 πŸ‘ 9 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0