Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

Great Black-backed Gull (Larus marinus) JK37 2007-2008-2010, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

CR-Code Black with white code JK37 Ringing Centre Ringing Centre Stavanger Ringnumber 3005587
Species  Great Black-backed Gull (Larus marinus)  Sex  X  Age  Pull  Date  29.06.2006
Place  Guleholmane, Lindesnes, Vest-Agder, NORWAY Co-ordinates  57.59.31 N - 07.05.39 E

29.06 2006 Guleholmane, Lindesnes, Vest-Agder, Norway 57°59'31"N 007°05'39"E
22.12 2006 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
23.12 2006 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
15.01 2007 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
17.01 2007 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
20.01 2007 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
24.01 2007 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
01.06 2007 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
28.06 2007 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
12.08 2007 Le Portel, Pas-de-Calais, France 50°43'10"N 001°34'38"E
21.09 2007 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
24.09 2007 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
28.04 2008 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
11.05 2008 Nordre Katland, Farsund, Vest-Agder, Norway 58°03'45"N 006°50'27"E
23.07 2008 Le Portel, Pas-de-Calais, France 50°43'10"N 001°34'38"E
08.08 2008 Le Portel, Pas-de-Calais, France 50°43'10"N 001°34'38"E
20.10 2008 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'40"N 001°35'16"E
10.01 2009 Wimereux, Pas-de-Calais, France 50°46'00"N 001°36'00"E
27.08 2009 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'29"N 001°34'19"E
14.04.2010 Ramslandsvågen, Lindesnes, Vest-Agder, Norway 58°01'48"N 007°06'35"E Identifié : mâle.
11.09 2010 Boulogne-sur-Mer, Pas-de-Calais, France 50°43'53"N 001°35'32"E
18.09 2010 le-portel, Pas-de-Calais, France 50°43'36"N 001°34'48"E
03.11 2010 Boulogne sur mer, Pas-de-Calais, France 50°43'36"N 001°35'00"E

below: JK37 2cy: February 22 2007, Boulogne sur Mer.

A Norwegian bird with almost all scapulars 2nd generation. Almost all scapulars replaced for 2nd gen feathers, except lowest row (lls).

below: JK37 2cy: September 24 2007, Boulogne sur Mer.

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: JK37 3cy: April 28 2008, Boulogne sur Mer.

below: JK37 5cy: November 03 2010, Boulogne sur Mer.

Apparently a male. P8 fully grown, just exceeding P7.