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) sub-adult, October 01 2001, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E).

Primary p6 fully grown and p10 still not shed. Note the variegated pattern in the lower tertial and the brown lesser coverts.