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) JYJ90 2CY, August 26 2014, Boulogne sur Mer, France. Picture Jean-Michel Sauvage.

Bird ringed as pullus on July 02 2013 at Græsholm, Hirsholmene, Frederikshavn, Nordjylland, Denmark (57°29'32"N 010°36'30"E).

History:
02.07 2013 à : Græsholm, Hirsholmene, Frederikshavn, Nordjylland, Denmark 57°29'32"N 010°36'30"E
28.09 2013 - Kjul Å, Hirtshals, Nordjylland, Denmark 57°35'21"N 010°00'34"E
29.09 2013 - Kjul Å, Hirtshals, Nordjylland, Denmark 57°35'21"N 010°00'34"E
29.09 2013 - Hirtshals, Øststranden, Nordjylland, Denmark 57°35'28"N 009°59'23"E
26.08 2014 - Boulogne-sur-mer "Roro", Pas-de-Calais, France 50°43'24"N 001°34'03"E

In complete moult: P7/P10. Note very worn 2nd gen inner coverts and upper tertials, normally the feathers that will be replaced again in September and October in the partial autumn moult.