As pointed out by Ronald here at the bottom:
viewtopic.php?f=14&t=104
it´s always advisable to be aware of the possibility of hybrids. As can be seen in cachinnans observed in W.E the primary pattern is to a certain degree, variable. Some individuals shows a mirror on p10 with a larger amount of black in wingtip, as the bird in the linked post above. However, when viewing pic. of adult cachinnans - the position of the primaries are important, to be able to see get a clear view of the pale tongues - especially on the upperside. Some birds do have short toungues on p9 & p10.
http://www.artportalen.se/birds/gallery ... eID=115596
http://gneubauer.republika.pl/Apr2009.html
Jan
Dark eyed YLG
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Re: Dark eyed YLG
Dark eyes also possible in adult Herring gulls, but quite, quite rare. This guy is an example, 7 years old in February 1996. Hatched (metal-ring) on the Finnish SW-coast and observed near Rostock/Germany.
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