Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)
Coordinators:
Jean-Michel Sauvage (France)
Morten Helberg (Norway)
Nils Helge Lorentzen (Norway)
Mars Muusse (Netherlands)

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Great Black-backed Gull (Larus marinus) 2cy: August 2000, Boulogne/Mer, France (50.42 N - 01.34 E).

A bird resembling the previous one, but here the complete median covert row has been replaced. Note the pattern of the inner and outer-webs of the inner primaries, creating a window in flight. Again, the outer two primaries have to grow a few inches.