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argentatus?
Posted: Tue Dec 29, 2009 10:13 pm
by JanJ
Hi all.
What are you people's impression when seing Alan Dalton's gull - taken in Stockholm today? It looks a bit dark and the scapular pattern seems odd for a 2cy argentatus. A LBBG is a better option of course, I see that now
Jan
Re: argentatus?
Posted: Wed Dec 30, 2009 8:22 am
by lou bertalan
JanJ wrote:Hi all.
What are you people's impression when seing Alan Dalton's gull - taken in Stockholm today? It looks a bit dark and the scapular pattern seems odd for a 2cy argentatus. A LBBG is a better option of course, I see that now
Jan
a
graellsii in winter in stockholm???
lou
Re: argentatus?
Posted: Wed Dec 30, 2009 9:28 am
by JanJ
Some more pic.
I´m not specifically suggesting graellsii - but something within the LBBG ssp. Or is it just an odd argentatus?
Anyway - a graellsii in winter Stockholm - stranger things has happend!
Jan
Re: argentatus?
Posted: Wed Dec 30, 2009 11:55 am
by lou bertalan
well, could of course be an intermedius but scapulars do look rel. pale for that especially for those which almost get black as adults. but i can't give any better suggestion either. heuglini/barabensis seem off as they'd have a much more advanced plumage by now.
Re: argentatus?
Posted: Thu Dec 31, 2009 4:27 pm
by JanJ
I know that it is streaching this to much - but some showing more of the wing pattern on this 2cy LBBG, presumable graellsii.
Jan
Re: argentatus?
Posted: Thu Dec 31, 2009 6:22 pm
by lou bertalan
maybe you saw the p10 mirrors... how often does this occure in graellsii??? i recall having seen this in 2nd generation heuglini primaries, but graellsii?
lou
Re: argentatus?
Posted: Thu Dec 31, 2009 8:38 pm
by JanJ
Yes I did Lou.
Not a common feature in 2cy LBBG or HG but does very rarely occur. I can verify for just 1 seen by myself over the years!
http://www.gull-research.org/lbbg2cyd/2cynovpic9.htm
Jan
Re: argentatus?
Posted: Fri Jan 01, 2010 9:06 pm
by Theo Muusse
When we combine all features, time of year, place or whatever, I get a strong intermedius feeling.
Its a slender bird with a slender bill (female) with obvious signs of LBBG. The pattern of the freshest scaps with only a shaft streak darker, the dark grey colour of the ad-like feathers, the inner primaries, yes, I feel for a female intermedius. Despite the mirror on p10 and the tail-barring.
Theo
Re: argentatus?
Posted: Wed Jan 13, 2010 7:59 pm
by JanJ
Another image og this LBBG taken on 7 Nov. 2009.
Jan
Re: argentatus?
Posted: Mon Feb 22, 2010 3:52 pm
by JanJ