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)

Great Black-backed Gull (Larus marinus) 76D 3cy-4cy, October 2011 & November 2012, Boulogne sur Mer, France (50.44 N - 01.35 E). 
Picture Jean-Michel Sauvage.

Bird ringed at Le Havre, Seine-Maritime, Normandie, a colony nesting in urban area (49 29 N – 00 09 E).
Nest with eggs, hatched May 16 2009, pulli ringed on June 16 2009. Male.

Observations:
18/09/2009 Trouville-sur-Mer Calvados FRANCE 49 21 N – 00 04 E T. Le Huu Nghia
25/10/2009 Whitstable Kent ENGLAND 51 21 N – 01 01 E I. Rendall
05/12/2009 Boulogne-sur-Mer Pas-de-Calais FRANCE 50 44 N – 01 35 E J-M Sauvage
31/07/2010 Boulogne-sur-Mer Pas-de-Calais FRANCE 50 44 N – 01 35 E J-M Sauvage
14/09/2010 Boulogne-sur-Mer Pas-de-Calais FRANCE 50 44 N – 01 35 E J-M Sauvage
16/10/2011 Boulogne-sur-Mer Pas-de-Calais FRANCE 50 44 N – 01 35 E J-M Sauvage
26/10/2011 Boulogne-sur-Mer Pas-de-Calais FRANCE 50 44 N – 01 35 E J-M Sauvage
19/11/2011 Boulogne-sur-Mer Pas-de-Calais FRANCE 50 44 N – 01 35 E J-M Sauvage
19/11/2011 Outreau (Bassin de la Liane) Pas-de-Calais FRANCE 50 42 N –01 36 E J-M Sauvage
24/11/2011 Le Havre Seine-Maritime FRANCE 49 29 N – 00 06 E G Le Guillou
30/04/2012 Dives-sur-Mer Calvados FRANCE 49 17 N - 00 05 W TLe Huu Nghia
01/11/2012 Boulogne-sur-Mer Pas-de-Calais FRANCE 50 44 N – 01 35 E J-M Sauvage

below: Larus marinus 76D 4cy, November 15 2012, Boulogne sur Mer.

Very much adult-like in plumage. Dark on bill no safe criterion for ageing.

below: Larus marinus 76D 4cy, November 01 2012, Boulogne sur Mer.

About taking off.

below: Larus marinus 76D 3cy, October 26 2011, Boulogne sur Mer, France.

P9 fully grown.