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Putative Kumliens Gull in Denmark?

Posted: Tue Mar 30, 2010 4:21 pm
by Kent Olsen
Hi all

Some of you might have seen this gull many years ago, but as time goes on we learn new things and gain more experience with odd individuals, so please have a look again ;-) ... lieni.html

There has been some debate concerning the age of the bird, in the beginning when only seen at some distance it was suspected as being a 4th winter (5K) based on the apparently pure adult plumage with completely white tail and all adult tertials and the only exceptions being the extreme nicotine brown shawl and hooded appearance and the retarded development in bill colour. But after closer examinations the immature wash on primary coverts along with some markings on the inner primaries became apparent and it was then re-aged as a 3rd winter (4K) gull.

Any suggestions on age and ID would be much appreciated

Cheers, Kent

Re: Putative Kumliens Gull in Denmark?

Posted: Wed Mar 31, 2010 7:24 am
by Theo Muusse
Based on bill colour and plumage, I feel for 3rd winter too.
The thing is, anything more than white outer primaries (tip, inner web) would make it a kumlieni...
But I have been wrong before so let's wait for Peter.


Re: Putative Kumliens Gull in Denmark?

Posted: Tue Apr 06, 2010 9:54 pm
by adriaens
Coincidence or not, but I have just come back from a trip to Iceland, to study Iceland Gulls (among other).
Second- and third-cycle birds (especially 'retarded' individuals) can certainly show (pale) brown-washed outer primaries!

The Danish birds looks like a 3rd-cycle. I don't think you can exclude glaucoides...

Re: Putative Kumliens Gull in Denmark?

Posted: Wed Apr 07, 2010 4:09 pm
by JanJ
Interesting pic. by Hans here in connection with the above stated ... 0&page=all