Larus cachinnans

(last update: February 16, 2013)

Coordinator:
Greg Neubauer
Marcin Przymencki
Albert de Jong
Mars Muusse

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cachinnans plumages

Larus argentatus argentatus 3CY, Katwijk, Netherlands, 17 November 2009. Picture: Mars Muusse.

Immature looking birds may resemble 2CY birds in November and December, but ageing is easy once the inner primaries are exposed.