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 adult (Larus marinus) August 29 2012, IJmuiden, the Netherlands (52.27N - 04.33E).

Active complete moult, P4 fully grown, P7-P10 old.