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 (Larus marinus) J17Y 1cy: November 24 2007, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Bird ringed as pullus in Norway.

Upper scapulars 2nd gen, but wing-coverts and tertials still juvenile.