Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 1cy PHDK November 19 2011, Normandy, France. Picture: Tony Le Huu Nghia.
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Bird ringed yellow PHDK; ringed as pullus on May 24 2011 at Zwirownia Zakole A, Jankowice - Babice, Poland (50,02N 19,28E). Zwirownia = gravel pit, this colony is situated between the towns of Babice and Jankowice in a gravel pit.
Scapulars replaced, but wing-coverts and tertials still juvenile.