Gulls in NW Europe
(last update: September 25, 2011
Herring Gull sub-adult, December 02 2012, Katwijk, the Netherlands.
Bird not ringed, no provenance on ssp. Probably 4cy.
Full sub-terminal band on P10, small mirror on P9, full black band on P5. Note dark smudge on greater primary coverts.
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