Gulls in NW Europe
(last update: September 25, 2011
Herring Gull adult (argentatus), January 06 2012, Katwijk, the Netherlands.
Thayeri pattern on P10, combined with a sub-terminal band on inner web.
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Herring Gull adult (argentatus), January 06 2012, Katwijk, the Netherlands.Thayeri pattern on P10, combined with a sub-terminal band on inner web.
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