Gulls in NW Europe
(last update: September 25, 2011
Herring Gull sub-adult, January 16 2013, Katwijk, the Netherlands.
Markings on primary coverts, but otherwise much adult-like suggest 5cy.
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Herring Gull sub-adult, January 16 2013, Katwijk, the Netherlands.Markings on primary coverts, but otherwise much adult-like suggest 5cy.
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