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) JM06 1CY-6CY, September 2006 - October 2011, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

CR-Code Black with white code JM06  Ringing Centre  Stavanger  Ringnumber 3005656 Ringer Morten Helberg

Species  Great Black-backed Gull (Larus marinus)  Sex  X  Age Pull  Date 29.06.2006

Place Vestre Bratholmen, Lindesnes, Vest-Agder, NORWAY Co-ordinates 57.59.16 N - 07.05.16 E

Observations:
13.09 2006 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
30.09 2006 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
01.10 2006 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
29.12 2006 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
03.04 2007 Dungeness, Kent, Great Britain 50°55'29"N 000°56'34"E
13.04 2007 Dungeness, Kent, Great Britain 50°55'29"N 000°56'34"E
23.09 2007 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
24.09 2007 Boulogne-sur-Mer harbour, Pas-de-Calais, France 50°43'34"N 001°35'04"E
28.11 2007 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
20.10 2008 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
22.01 2011 Boulogne-sur-Mer beach, Pas-de-Calais, France 50°43'54"N 001°35'31"E
01.02 2011 Boulogne-sur-Mer beach, Pas-de-Calais, France 50°43'54"N 001°35'31"E
28.10 2011 Boulogne-sur-Mer Harbour, Pas-de-Calais, France
29.10.2011 Boulogne sur mer.

Below: JM06 1cy, September 30 2006.

Few upper scapulars replaced.

Below: JM06 1cy, October 01 2006.

Still only few upper scapulars replaced.

Below: JM06 2cy, September 24 2007.

Bird just arrived from feeding at sea. P9 fully grown; no old primaries left. Obvious signs of partial autumn moult: classic pattern with upper tertials, median covert row and inner greater coverts again replaced in autumn.

Below: JM06 3cy, October 20 2008.

Complete moult nearly finished. 3rd gen secondaries.

below: JM06 6cy, October 29-30 2011, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

6cy bird wil some black on the bill. P7 fully grown.