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 4cy, 10 April 2009, Riga, Latvia. Picture: Chris Gibbins.

Obvious white P10 mirror on 3rd gen primaries. The extent of any brown remaining in the wing of this age group is variable – this bird has rather a lot of dark in the coverts, but
none in the tertials.