Gulls in NW Europe
(last update: September 25, 2011
possible hybride Herring Gull adult (argentatus) March 19 2010, IJmuiden, the Netherlands.
Fine bill, much black on bill. Note plain grey adult-like greater primary coverts, which should advocate full adult plumage. Sub-terminal black on P6, but not on P5. Depending on light, legs sometimes saturated pink. Attenuated rear end.
