www.gull-research.org

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?)?

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

Theo

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

Mars

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

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…

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

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, did you check the underwing?

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

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.