Gulls in NW Europe
(last update: September 25, 2011
Herring Gull 3cy, December 02 2012, Katwijk, the Netherlands.
Bird not ringed, no provenance on ssp. In foreground: 2cy Herring Gull.
Showing typical 3rd gen flight feathers: some dark centres on secondaries, brown grey inner primaries, no large white tips on outer primaries, no mirror on P10.
