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 337783 2CY August & November 2013, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Bird ringed as pullus on July 08 2012 at Fluoy, Hordaland, Tysnes, Norway (60°0510N, 005°3130E).
Travelling distance: 1068 km.
First recorded on July 30 2013 at Boulogne.

below: NOS 337783 2CY November 06 2013, Boulogne sur Mer, France. Picture Jean-Michel Sauvage.

Complete moult finished. Note mirror on P10. Compare to August, now partial autumn moult in:
tt1, gc1-2, mc2,10,11,13,15, llc1-3,6,8-12, lc10x.

below: NOS 337783 2CY August 14 2013, Boulogne sur Mer, France. Picture Jean-Michel Sauvage.

Moult: P7/-.