Some immature Yellow-legged Gulls, Bucharest, November 28th

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Cristian Mihai
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Some immature Yellow-legged Gulls, Bucharest, November 28th

Post by Cristian Mihai » Sun Nov 29, 2009 9:12 am

In the first three pics a nice 2cy bird.
In the next three pics another bird.
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lou bertalan
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Re: Some immature Yellow-legged Gulls, Bucharest, November 28th

Post by lou bertalan » Sun Nov 29, 2009 12:03 pm

hi cristian,

the 'other' bird is a 2cy caspian. note the growing pale tongues on p10 underside (and p8,9), i think its bill is a bit deformed (upper mandible) thus the monstrous appearance. it is short also for caspian. but on plumage alone this looks like a good cachi.

cristian, my proposal is to further post pics from dambovita here: viewtopic.php?f=11&t=57
that would be enbedded in a much clearer thread about that specific location - and you wouldn't be bothered with posting pics of either caspian, YLG or other species in the same post.

best,

Cristian Mihai
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Re: Some immature Yellow-legged Gulls, Bucharest, November 28th

Post by Cristian Mihai » Sun Nov 29, 2009 3:39 pm

Thankx Lou,

Obviously I have to agree with you that the second bird looks much better for a Caspian :D

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Theo Muusse
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Re: Some immature Yellow-legged Gulls, Bucharest, November 28th

Post by Theo Muusse » Mon Nov 30, 2009 2:36 pm

The first one, if seen at least in Holland and around, would ask for a careful elimination of Herring!
Theo

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JanJ
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Re: Some immature Yellow-legged Gulls, Bucharest, November 28th

Post by JanJ » Tue Dec 01, 2009 3:22 pm

Theo Muusse wrote:The first one, if seen at least in Holland and around, would ask for a careful elimination of Herring!
Theo
Around here to, that is to say SE. Sweden

JanJ

Jonas Landolt
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Re: Some immature Yellow-legged Gulls, Bucharest, November 28th

Post by Jonas Landolt » Sat Dec 05, 2009 9:40 pm

Hi everybody

I'm from Switzerland. And here I have exactly this problem with second winter Herring and Yellow-legged Gulls, because in winter Herring Gulls are nearly as common as Ylg at the Bodensee. What are the best features to identify second winter Herring respectively Yellow-legged Gulls? In the "Gulls of Europe,..." from Olson and Larsson are mentioned points like: vermiculated greater coverts or with indistinct bars, saddle with a mixture of grey and dark-marked feathers etc. This Ylg from Bucharest shows exactly these features... In the book aren't many helpful identification points and there is no comparison of second winter birds. What does a typical second winter Hg/Ylg look like? Unfortunately on the web I couldn't find many pictures of second winter gulls. Are there any papers about this topic?

Good Gulling ;)
Jonas

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JanJ
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Re: Some immature Yellow-legged Gulls, Bucharest, November 28th

Post by JanJ » Sat Dec 05, 2009 10:16 pm

Hello Jonas.

A quick answer to your question would be to direct you to this very site, which might be a better option than explaning with a lot of words, I´m sure you have noticed.
For a start - have a look at these and note as well as plumage (variability included) structural and moult differences.

http://www.gull-research.org/ylg1cy2cy/ ... cyjuly.htm

http://www.gull-research.org/hg/HG1CY07.htm

http://www.iesmeulmeester.nl/index.php

http://www.pbase.com/stephaubry/gulls&page=all

http://www.xs4all.nl/~daarruud/

JanJ

adriaens
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Re: Some immature Yellow-legged Gulls, Bucharest, November 28th

Post by adriaens » Tue Dec 29, 2009 5:13 pm

Hi Jonas,

I think the key is to study difficult birds like this not only at rest but also in flight.
For a few general identification tips, see e.g. http://www.gull-research.org/papers/thesis.pdf , page 63.

Cristian Mihai
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Re: Some immature Yellow-legged Gulls, Bucharest, November 28th

Post by Cristian Mihai » Sat Jan 02, 2010 3:35 pm

I found again (after 33 days) the first bird from this topic. The new location is at a few kilometers from the old one. Some pics attached here.
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