Gull Research Organisation

Great Black-backed Gull (Larus marinus) (last update: October 12, 2011)
Coordinators: Jean-Michel Sauvage (France) Morten Helberg (Norway) Nils Helge Lorentzen (Norway) Mars Muusse (Netherlands) gbbg rings gbbg PDF's gbbg 1cy August gbbg 1cy September gbbg 1cy October gbbg 1cy November gbbg 1cy December gbbg 2cy January gbbg 2cy February gbbg 2cy March gbbg 2cy April gbbg 2cy May gbbg 2cy June gbbg 2cy July gbbg 2cy August gbbg 2cy September gbbg 2cy October gbbg 2cy November gbbg 2cy December gbbg 3cy January gbbg 3cy February gbbg 3cy March gbbg 3cy April gbbg 3cy May gbbg 3cy June gbbg 3cy July gbbg 3cy August gbbg 3cy September gbbg 3cy October gbbg 3cy November gbbg 3cy December gbbg sub-ad January gbbg sub-ad February gbbg sub-ad March gbbg sub-ad April gbbg sub-ad May gbbg sub-ad June gbbg sub-ad July gbbg sub-ad August gbbg sub-ad September gbbg sub-ad October gbbg sub-ad November gbbg sub-ad December gbbg ad January gbbg ad February gbbg ad March gbbg ad April gbbg ad May gbbg ad June gbbg ad July gbbg ad August gbbg ad September gbbg ad October gbbg ad November gbbg ad December	Great Black-backed Gull adult October	*Great Black-backed Gull (Larus marinus) JD28 7cy:* October 2004 & 2010, Westkapelle, the Netherlands (51.33 N - 03.25 E). Primary p7 fully grown.
		*Great Black-backed Gull (Larus marinus) 8cy JD34* October 14 2006, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
		*Great Black-backed Gull (Larus marinus) 12cy JL03* October 19 2009, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
		*Great Black-backed Gull (Larus marinus) JR88:* October 05 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). A Scandinavian adult ringed JR88. P6 is fully grown P10 is still old.
		Great *Black-backed Gull (Larus marinus) J5RP* April 2008, December 2011 & October 2012, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
		*Great Black-backed Gull (Larus marinus) 5cy J8P3* October 02 2006, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
		*Great Black-backed Gull (Larus marinus) 7cy J9K5* October 26 2008, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
		*Great Black-backed Gull (Larus marinus) 10+cy JGU5* October 24 2006, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
		*Great Black-backed Gull (Larus marinus) 10+cy JGV2* October 21 2006, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
		*Great Black-backed Gull (Larus marinus) 6cy JH0R* October 01 2010, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
		*Great Black-backed Gull (Larus marinus) 6cy JM06* October 29-30 2011, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
		*Great Black-backed Gull (marinus) 5cy JA175* October 31 2012, Boulogne-sur-Mer, NW France. Picture: Jean-Michel Sauvage.
		*Great Black-backed Gull (Larus marinus) 5cy JA686* October 01 2012, Westkapelle, the Netherlands.
		*Great Black-backed Gull (Larus marinus) A - 216331* October 05 2002, Boulogne sur Mer, France (50.42 N - 01.34 E). P7 is fully grown. All outer primaries have been shed.
		*Great Black-backed Gull (Larus marinus)16cy NOS 354288* October 18 2002, Moustafabaai - Maasvlakte, the Netherlands. P7 fully grown and P8 is at the same length, no old primaries left.
		*Great Black-backed Gull (marinus) 25cy NOS 354859* October 29 & November 01 2012, Boulogne-sur-Mer, NW France. Picture: Jean-Michel Sauvage.
		*Great Black-backed Gull (L. marinus) NOS 367624* October 02 2004, IJmuiden, the Netherlands. Picture: Ruud Altenburg.
		*Great Black-backed Gull (marinus) 13cy NOS 392865* October 03 2012, Boulogne-sur-Mer, NW France. Picture: Jean-Michel Sauvage.
		*Great Black-backed Gull (marinus) adult NOS 30x391* October 03 2012, Boulogne-sur-Mer, NW France. Picture: Jean-Michel Sauvage.
		*Great Black-backed Gull (Larus marinus) ad NOO OA03218* October 22 2004 Westkapelle, the Netherlands.
		*Great Black-backed Gull (Larus marinus) adult BTO E08641* October 08 2010, Boulogne / Mer, France. Picture Jean Michel Sauvage.
		*Great Black-backed Gull (L. marinus) 9cy E703* October 30 2009, Westkapelle, the Netherlands (51.33N-03.25E).
		Great Black-backed Gull (Larus marinus) 5cy NLA 6038628 October 16 2011, IJmuiden, the Netherlands. Picture: M v Kleinwee.
		*Great Black-backed Gull (Larus marinus) adult --* October 26 2011, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.
		*Great Black-backed Gull (L. marinus) adult,* October 11 2011, Scheveningen, the Netherlands.
		*Great Black-backed Gull (L. marinus) adult,* October 11 2011, Scheveningen, the Netherlands.
		*Great Black-backed Gull (L. marinus) adult,* October 11 2011, Scheveningen, the Netherlands.
		*Great Black-backed Gull (L. marinus) adult,* October 11 2011, Scheveningen, the Netherlands.
		*Great Black-backed Gull (L. marinus) adult,* October 11 2011, Scheveningen, the Netherlands.
		*Great Black-backed Gull (L. marinus) adult,* October 11 2011, Scheveningen, the Netherlands.
		*Great Black-backed Gull (L. marinus) adult,* October 11 2011, Scheveningen, the Netherlands.
		*Great Black-backed Gull (L. marinus) adult,* October 11 2011, Scheveningen, the Netherlands.
		*Great Black-backed Gull (Larus marinus) adult:* October 01 2001, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). The tip of primary P5 equals the tip of the fully grown P4. Outer primaries P8-P10 still have to be shed.
		*Great Black-backed Gull (Larus marinus) adult:* October 01 2001, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). The tip of primary P5 equals the tip of P3 while P4 is fully grown. Note the missing greater coverts, exposing the secondaries underneath.
		*Great Black-backed Gull (Larus marinus) adult:* October 05 2003, IJmuiden, the Netherlands (52.27 N - 04.33 E). Primary P6 fully grown and P10 still old. Greater coverts and tertials fresh.
		*Great Black-backed Gull (Larus marinus) adult:* October 05 2003, IJmuiden, the Netherlands (52.27 N - 04.33 E). Primary P6 fully grown and P10 still old. Greater coverts and tertials fresh.
		*Great Black-backed Gull (Larus marinus) adult:* October 11 2002, IJmuiden, the Netherlands (52.27 N - 04.33 E). P7 fully grown, no old primaries left.
		*Great Black-backed Gull (Larus marinus) adult:* October 20 2003, IJmuiden, the Netherlands (52.27 N - 04.33 E). P6 fully grown, P9-P10 still old primaries.
		*Great Black-backed Gull (Larus marinus) adult:* October 20 2003, IJmuiden, the Netherlands (52.27 N - 04.33 E). P7 fully grown, no old primaries left.

Great Black-backed Gull (Larus marinus)

Great Black-backed Gull adult October