delayed moult in LBBG?

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alfosse
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delayed moult in LBBG?

Post by alfosse » Mon Jan 20, 2014 12:44 pm

This bird (no other pictures) taken on 17 Jan 2014 in Western France seems to have a delayed moult.
Could it be a L. f. fuscus? or just a lately born bird (intermedius?)?
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Alain Fossé
Angers, France

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Theo Muusse
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Re: delayed moult in LBBG?

Post by Theo Muusse » Mon Jan 20, 2014 9:46 pm

It may very well be a fuscus, an intermedius I cannot exclude sadly.
Nice bird!

Theo

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marsmuusse
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Re: delayed moult in LBBG?

Post by marsmuusse » Mon Jan 20, 2014 10:42 pm

Hi Alain,
http://www.gull-research.org/lbbg1cy/j0y7dec.htm
Remember this one? ;-)

Mars

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alfosse
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Re: delayed moult in LBBG?

Post by alfosse » Tue Jan 21, 2014 3:46 am

Theo Muusse wrote:It may very well be a fuscus, an intermedius I cannot exclude sadly.
Alas yes, I've never succeeded to spot a cr-fuscus here :cry:
marsmuusse wrote:http://www.gull-research.org/lbbg1cy/j0y7dec.htm
Remember this one?
Very well, Mars, It's a pity we have no new picture of that bird…
Alain Fossé
Angers, France

lou bertalan
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Re: delayed moult in LBBG?

Post by lou bertalan » Tue Jan 21, 2014 7:53 am

hi, totally juvenile plumaged LBBG in midwinter should be not too rare, but http://www.gull-research.org/lbbg1cy/j0y7dec.htm looks much more like a typical intermedius (or graellsii) on heavy built and homogenous dark underparts.
alain's bird has very long wings, is light built and has pale underparts - more like a typical fuscus. unfortunately there's too much variation (and difference between males and females as we all know) in all taxa to be on the safe side with such general statements :( but nonetheless this pale long winged bird looks very very fuscus like.

lou

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alfosse
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Re: delayed moult in LBBG?

Post by alfosse » Tue Jan 21, 2014 8:35 am

lou bertalan wrote:... this pale long winged bird looks very very fuscus like.
Thank you Lou, hope we'll find a ringed bird in the future...
Alain Fossé
Angers, France

adriaens
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Re: delayed moult in LBBG?

Post by adriaens » Tue Jan 21, 2014 1:34 pm

Alain, did you check the underwing?

http://birdingfrontiers.com/2013/09/23/ ... ltic-gull/

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alfosse
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Re: delayed moult in LBBG?

Post by alfosse » Tue Jan 21, 2014 1:49 pm

adriaens wrote:Alain, did you check the underwing?

http://birdingfrontiers.com/2013/09/23/ ... ltic-gull/
Alas no, I'll try to pay attention next time...
Thank you for your reference.
Alain Fossé
Angers, France

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