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) J33Y September & November 2007, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Bird ringed in Sogne, Norway, on July 04 2007.

below: J33Y 1cy, September 26 2007, Boulogne sur Mer.

Only single upper scapulars 2nd gen, but wing-coverts and tertials still juvenile.

below: J33Y 1cy, November 02 2007, Boulogne sur Mer.

Still active moult in upper scapulars.