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Here is another strongly breast-barred and quite dark-winged bird. Gdynia, 12th Feb 11, iso 1600...
Greg

How many Glaucous Gulls do you have over there? They seem to sneak into the background in every photo series you post! ;) Just two. Both have posed nicely near the two recent gulls I've posted. A fairly good season for glaucous, with as 'many' as four (at least) birds seen. Recent winters have been...

Here is another gull from today, much closer to arg than VAAK when seen standing, but showing similar plain grey lower scaps and a sign of this contrast between white had and grey breast/sides.
Greg

Hi, [cannot quote selectively...] lou writes: "while i still have no images of definite documented hybrids mich x cach (although i know they have occured in poland) but probably are one of the rarest combinations in european large gull hybrids" there is one photo of cach x mich published in DB 32, 2...

I agree with Theo
G.

Hi, thanks a lot and sorry for my impatience! That's something I needed. In the mean time a comment from O & M Ujihara arrived who also exclude a SBG. It is therefore definitely not a SBG while what it is remains unanswered. I heard or read about dark northern argentatus, and have never seen some da...

Hi Greg, my first impression from these photos is of a (very) dark, northern argentatus . Of course, it is possible that there is some influence of Great Black-backed Gull in this bird; who knows... In any case, it does not look like a Slaty-backed Gull to me. Thanks Peter. An option that I didn't ...

Really, nobody is able to produce a comment about such an extraordinary bird? no thoughts? pics have been viewed 50+ times since yesterday...
Attached one more showing well the wing-tip from the underside.
Greg

Hi All, have just wanted to start a new topic, but thx to Theo's reply discovered that it already is here... Pls have a look on that bastard I photographed yesterday at my favourite coastal site - Wladyslawowo, N PL (some of you may still remember the place from the 2003 IGM) Not surprisingly, initi...

It was me - perhaps among others - who commented on id of VAAK. That's what I wrote Kjeld on Feb 16th: if underwing was pale enough I would go for cachinnans with darker-than-usual wings. If no pale window was present on inner prims I would wonder of some LBBGs perhaps (reads as: better left unident...