Larus cachinnans

(last update: February 16, 2013)

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adult January
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Larus cachinnans adult, September 2010, Dumpiai dump - Klaipeda, Lithuania. Picture: Chris Gibbins.

P7/P9, with P8 growing; very small moult gap for Caspian Gull. Almost thayeri-pattern on P10. Simultaneous moult in outer secondaries (common moult strategy). A large and very aggressive (presumably male) bird. It was calling very regularly and seemed to dominate all other gulls present.