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Diver - Yellow-billed or Great northern, Denmark 04/04/2024 (1 Viewer)

Hi, I just had this great diver sp. during the morning observation. Personally, I believe it's a Yellow-billed diver, but I would appreciate hearing someone else's opinion
Best regards Louis P.


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The neck pattern (diffuse with no clear cut black and white contrast and no obvious collar) and the apparent uptilted shape of the bill support White-billed Diver (or Yellow-billed if you prefer).

You may find this thread of interest:
Given the low quality of the photos (no offence to the OP) I believe it unsafe to draw these conclusions.
Perhaps on their own that might be the case but if the photos are supported by in-field observations (i.e. to demonstrate that the apparent features in the photos were really visible in the field) then I think they are very helpful.
the apparent features in the photos
Are they apparent? I see a pattern on fore-neck and side of neck which is essentially mushy and could easily be consistent with great northern diver, a hindneck which is (at least) as dark as the upperwing which thus seems better for great northern diver than for white-billed diver, and an uptilted-looking bill in one photo out of four - an effect which could easily be created by the accidental arrangement of pixels in that one (sorry, low-quality) photo. It may indeed be, of course, that the OP spent more time looking through bins/scope than through camera as it flew past and has good field notes to confirm the suggested ID 👍🏻
Thanks for all comments - in field my first impresion was GND, i didnt look at it in the scope for that long, focused on getting picture (i know that its bad but), but for the short time that i had it in the scope, the bill didnt looked really bright/white/ivory like i would expect from a yellow billed even though it was cloudy. It was first when i looked at the pictures where the bill is "tilting up" that i thought that it had to be a YBD then. But looking closer at the pictures i think it might just be some "accidental arrangement of pixels" as Butty also mentioned, cause i think actually that most other things fits best on GND - I have atached all images below.


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