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)

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

Primary p8 is fully grown. The innermost and outer median coverts are still growing, following the same moult strategy as in the previous bird.