Great Black-backed Gull (Larus marinus)
(last update: July 12, 2015)
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).
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.