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) J431W 1cy, December 01 2011, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Bird ringed at Knogen, Læsø, Nordjylland, Denmark (57°16'49"N 011°10'34"E) on June 30 2011.

Observations:
None.

Several upper and lower scapulars replaced for 2nd gen feathers.