An example of a 1cy Caspian Gull with heavily patterned upper tail an rump and dark brown underwings from Denmark 30/12/2010.
http://gulldk.blogspot.com/2011/01/casp ... s-1cy.html
Cheers
Kent
heavily patterned upper tail
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lou bertalan
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Re: heavily patterned upper tail
hi kent,
now this one looks really hybridish. it has some caspian in it but many things point to at least f1 or f2 parentage of argnetatus: dark markings on uppertail coverts are very coarse and dark subterminal bltches on inner primaries accentuated as in HG. and legs are short and thick. so, even if we don't really know it most things point to a hybrid.
all the best and happy new year, good gulling 2011!
lou
now this one looks really hybridish. it has some caspian in it but many things point to at least f1 or f2 parentage of argnetatus: dark markings on uppertail coverts are very coarse and dark subterminal bltches on inner primaries accentuated as in HG. and legs are short and thick. so, even if we don't really know it most things point to a hybrid.
all the best and happy new year, good gulling 2011!
lou