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) L28 1cy: November 21 2012, Boulogne sur Mer, France. Picture Jean-Michel Sauvage.

Ringed as pullus on 20 June 2012 at Chausey, Manche, Normandie. First read reading for this bird.

US: 75-99%, LS: 1-25%, TOT SCAPS: 25-50%. Coverts and tertials juvenile.