Gulls in NW Europe
(last update: September 25, 2011
Herring Gull (argentatus) adult, December 02 2012, Katwijk, the Netherlands.
Bird not ringed, no provenance on ssp. but head profile and wing-tip pattern are indications.
No sub-terminal band on P10, "thayeri" on P9, broken black band on P6, no black on P5.
