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| Coordinator: Greg Neubauer Marcin Przymencki Albert de Jong Mars Muusse cachinnans plumages | Larus cachinnans 1CY PCDP October 24 2011, Jaroslawiec, Poland. Picture: Michal Polakowski. Ringing data pending. Scapulars replaced, but all wing-coverts and tertials still juvenile. Note white head, long legs and parallel bill. 
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