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) JC231 3CY, March 07 2018, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Ringed as pullus on July 03 2016 at Valløytaklene Kollholman, Mandal, Vest-Agder, Norway (57°59'21"N 007°39'07"E).

Observations:
14/03/2017 - Boulogne-sur-mer,Pas-de-Calais,France
08/09/2017 - Hvide Sande, Midtjylland, Denmark - 56°00'01"N 008°07'25"E
07/11/2017 - Neeltje Jans, Radartoren, Zeeland, The Netherlands- 51°37'22"N 003°40'25"E
07;11/12/2017 - Boulogne-sur-mer,Pas-de-Calais,Fr
06;23/01/2018 - Boulogne-sur-mer,Pas-de-Calais,Fr
22;26/02/2018 - Boulogne-sur-mer,Pas-de-Calais,Fr
07/03/2018 - Boulogne-sur-mer,Pas-de-Calais,Fr

No signs of partial autumn moult in wing coverts. 2nd gen flight feathers.