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) 3cy: August 11 2003, Boulogne/Mer, France (50.42 N - 01.34 E).

Primaries P1-P6 fully grown and P9-P10 still old second generation, P10 lacking a mirror. Note old second generation central secondaries.