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) DKC 3096165 2CY-4CY, August 2014, July 2015 & January 2016, Boulogne sur Mer, France. Picture Jean-Michel Sauvage.

Male, ringed as pullus on June 05 2013 at Rågø Sand, Ravnsborg, Lolland & Falster, Denmark.

History:
05-06-2013 Rågø Sand, Ravnsborg, Lolland & Falster, Denmark.
11-09-2013 Port of Boulogne-sur-mer.
23.02.2014 Boulogne-sur-mer.
13.08.2014 Boulogne-sur-mer.
25.07.2015 Boulogne-sur-mer.

Great Black-backed Gull (Larus marinus) DKC 3096165 4CY, January 08 2016, Boulogne sur Mer, France. Picture Jean-Michel Sauvage.

Adult-like primaries in combination with several barred coverts.

Great Black-backed Gull (Larus marinus) DKC 3096165 3CY, July 27 2015, Boulogne sur Mer, France. Picture Jean-Michel Sauvage.

Bird in last stage of complete moult: P8 fully grown, outer primaries still growing.

Great Black-backed Gull (Larus marinus) DKC 3096165 2CY, August 13 2014, Boulogne sur Mer, France. Picture Jean-Michel Sauvage.

Bird in last stage of complete moult: P8 fully grown, outer primaries still growing.