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) JU450 adult, December 05 2017, Boulogne-sur-Mer, France. Picture: Jean-Michel Sauvage.

Black JU450 and metal NOS 3033440. Ring data pending.

Observations:
15/09/2016 - Boulogne-sur-Mer "beach", Pas-de-Calais, France - 50°43'54"N 001°35'31"E
22/09/2017 - Boulogne-sur-mer "beach", P-d-C, Fr
24/09/2017 - Audinghen "Cap-gris-nez", P-d-C, Fr - 50°52'28"N 001°36'12"E
05/12/2017 - Boulogne-sur-mer "harbour"P-d-C,Fr

Very late in its primary moult, with only P7 fully grown.