Larus cachinnans

(last update: February 16, 2013)

Coordinator:
Greg Neubauer
Marcin Przymencki
Albert de Jong
Mars Muusse

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cachinnans plumages

Larus cachinnans 3cy, September 10 2009, Preila, Lithuania. Picture: Chris Gibbins.

Probably 3cy bird with much black in tail and tertials. This bird is near to the end of its moult into 3W plumage (the outer primaries are not quite fully grown). A number of subtle features, used collectively, make 3W Caspian Gulls rather distinctive, but as all are found from time to time in Herring Gulls, none are diagnostic.This bird show 'lead shot' eyes, contrasting with a clean white head, greeny-yellow bill and grey-flesh legs.