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, 01 November 2011, Barneveld, the Netherlands. Picture: Herman Bouman.

Combination of well-developed mirror on P10 and many immature coverts.