Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

Jean-Michel Sauvage (France)
Morten Helberg (Norway)
Nils Helge Lorentzen (Norway)
Mars Muusse (Netherlands)

Great Black-backed Gull (Larus marinus) J1MV 2cy: October 15 2008, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Bird ringed as pullus at Karmoy, Norway, on June 30 2007.

30.06 2007, Observers Colour mark put on Ryvingen, Karmøy, Rogaland, Norway 59°16'45"N 005°09'05"E
10.10 2008, Le Portel beach, Pas-de-Calais, France 50°42'48"N 001°34'06"E
15.10 2008, Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
28.10 2010, Hanstholm havn, Nordjylland, Denmark 57°07'28"N 008°35'36"E
22.04 2011, Ryvingen , Karmøy, Rogaland, Norway

Complete moult almost finished, with P10 just an inch short. Note the replaced fresh feathers, moulted again recently in the partial autumn moult, which normally includes upper tertials, inner gc and many of the mc. Tertial #2 still growing here.