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)

gbbg rings
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Great Black-backed Gull (Larus marinus) J34Y 5cy, November 08 & 30 2011, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Bird ringed at Langøya, Trysfjorden, Søgne, Vest-Agder, Norway (58°01'14"N 007°41'59"E) on July 04 2007.

Observations:
30.03 2008 Darse Sarraz-Boumet, Boulogne-sur-Mer, Pas-de-Calais, France 50°43'20"N 001°34'42"E
07.11 2010 Boulogne-sur-Mer harbour, Pas-de-Calais, France 50°43'34"N 001°35'04"E 1222
07.01 2011 Boulogne-sur-Mer harbour, Pas-de-Calais, France 50°43'34"N 001°35'04"E
11.01 2011 Boulogne-sur-Mer harbour, Pas-de-Calais, France
07.09 2011 Hirtshals Havn, Beddingskajen, Nordjylland, Denmark 57°35'33"N 009°57'27"E
30.10 2011 Boulogne-sur-Mer harbour, Pas-de-Calais, France
08.11 2011 Boulogne-sur-Mer harbour, Pas-de-Calais, France
30.11 2011 Boulogne-sur-Mer harbour, Pas-de-Calais, France

5cy bird wil obvious bill band, could be taken for 4cy bird.