Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

Jean-Michel Sauvage (France)
Morten Helberg (Norway)
Nils Helge Lorentzen (Norway)
Mars Muusse (Netherlands)

Great Black-backed Gull (Larus marinus) 48C 2cy: 2008-2009-2010, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Ringed as pullus in Le Havre. Eggs hatched on May 31 2007, pulli ringed on June 30 2007.

below: 48C 2cy: May 14 2008, Boulogne sur Mer.

Scapulars replaced, wing-coverts and tertials juvenile.

below: 48C 2cy: September 02 2008, Boulogne sur Mer.

Complete moult in last stage. P9 fully grown. Gap in central gc just closing.

below: 48C 3cy: March 12 2009, Boulogne sur Mer.

Observed in Boulogne-sur-Mer, Pas-de-Calais, France in 2007, 2008, 2009.
But it has been recorded as well at Dives-sur-Mer, Calvados, France on November 11 2008.

below: 48C 4cy: July 31 2010, Boulogne sur Mer.

Adult like 4cy bird. No red on the bill.