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) J22Y November 08 2007 & August 23 2010, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Bird ringed as pullus on July 04 2007 at Sogne, Norway.

below: J22Y 1cy: November 08 2007, Boulogne sur Mer.

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

below: J22Y 4cy: August 23 2010, Boulogne sur Mer.

Complete moult halfway.