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 3cy (Larus marinus) August 29 2012, IJmuiden, the Netherlands (52.27N - 04.33E).

Last phase of complete moult, P10 old second generation with small mirror, P8 fully grown. New tail. Obvious dark bill.