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) JWU95 1CY, December 29 2016, Boulogne sur Mer, France. Picture Jean-Michel Sauvage.

Ringed as pullus on June 26 2016 at Græsholm W, Hirsholmene, Nordjylland, Denmark (57°29'25"N 010°36'15"). Travelling distance 953 Km.

History:
25.12 2016 - Boulogne-sur-Mer ( port de plaisance ), Pas-de-Calais, France
29.12 2016 - Boulogne-sur-Mer "bassin Loubet", Pas-de-Calais, France

US=100%, LS=75-99%, TOT SCAPS=75-99%. Coverts and tertials juvenile.