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) NOS 3032928 2CY, January 10 2015, Boulogne-sur-Mer, France. Picture Jean-Michel Sauvage.

Ringed in Norway in 2014 (data pending). Now in Boulogne-sur-Mer, Pas-de-Calais, France.

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