Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

Great Black-backed Gull (Larus marinus) 2cy-5cy JH373 2011, 2012 & 2014, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Bird ringed in Vestre Bratholmen, Lindesnes, Vest-Agder, Norway (57°59'16"N 007°05'16"E) on July 09 2010.

Observations:
09.07 2010 à : Vestre Bratholmen, Lindesnes, Vest-Agder, Norway 57°59'16"N 007°05'16"E
12.11 2010 - Boulogne-sur-Mer harbour, Pas-de-Calais, France 50°43'34"N 001°35'04"E
19.11 2010 - Wimereux Plage, Pas-de-Calais, France 50°46'18"N 001°36'06"E
29.11 2010 - Bassin de la liane, Outreau, Pas-de-Calais, France 50°42'18"N 001°36'34"E
11.12 2010 - Westkapelle, Walcheren, Zeeland, The Netherlands 51°32'25"N 003°26'10"E
06.03 2011 - Boulogne-sur-Mer harbour, Pas-de-Calais, France
12.03 2011 - Boulogne-sur-Mer harbour, Pas-de-Calais, France
12.04 2011 - Digue du Braek, Dunkerque, Nord, France 51°03'06"N 002°18'30"E
30.10 2011 - Boulogne-sur-Mer harbour, Pas-de-Calais, France 5
09.12 2011 - Boulogne-sur-Mer harbour, Pas-de-Calais, France
16.12 2011 - Boulogne-sur-Mer harbour, Pas-de-Calais, France
28.12 2011 - Boulogne-sur-Mer harbour, Pas-de-Calais, France
30.01 2012 - Boulogne-sur-Mer harbour, Pas-de-Calais, France
18.03 2012 - Digue du Braek, Dunkerque, Nord, France 51°03'06"N 002°18'30"E
17.08 2012 - Le Portel beach, Pas-de-Calais, France 50°42'48"N 001°34'06"E
30.09 2012 - Le Portel beach, Pas-de-Calais, France
10.10 2012 - Boulogne-sur-Mer harbour, Pas-de-Calais, France
20.10 2012 - Hardelot-Plage, Pas-de-Calais, France 50°38'01"N 001°34'29"E
29.10.2012 - Boulogne sur mer "harbour"
10.11 2012 - Boulogne-sur-Mer Port, Pas-de-Calais, France
17.11 2012 - Boulogne-sur-Mer Port, Pas-de-Calais, France
02.01 2013 - Cap-Gris-Nez, Pas-de-Calais, France 50°52'15"N 001°36'06"E
13.01 2013 - Boulogne-sur-Mer Port, Pas-de-Calais, France
13.06 2013 - Hirtshals Havn, Notkajen, Nordjylland, Denmark 57°35'38"N 009°58'27"E
05.09 2013 - Boulogne-sur-Mer Plage, Pas-de-Calais, France
26.10 2013 - Boulogne-sur-Mer Port, Pas-de-Calais, France
18.12 2013 - Boulogne-sur-Mer Port, Pas-de-Calais, France
11.01 2014 - Boulogne-sur-Mer Port, Pas-de-Calais, France
15.01 2014 - Boulogne-sur-Mer Port, Pas-de-Calais, France
19.01 2014 - Cap-Gris-Nez, Pas-de-Calais, France 50°52'15"N 001°36'06"E
05.02 2014 - Boulogne-sur-Mer ( port de plaisance ), Pas-de-Calais, France
02.03 2014 - Wimereux Plage, Pas-de-Calais, France 50°46'18"N 001°36'06"E
06.09 2014 - Boulogne sur mer "harbour", Pas-de-Calais,France
24.09 2014 - Boulogne sur mer "harbour", Pas-de-Calais,France

below: 2cy marinus JH373 December 09 2011, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Note small mirror on P10. Limited partial autumn moult as 2cy, but see 3cy.

below: 2cy marinus JH373 December 28 2011, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Wintering bird.

below: 3cy marinus JH373 October 29 2012, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Note mirror on P10. Typical pattern of partial autumn moult, included are upper tertials, inner GC, many MC and random LLC & LC.

below: 5cy marinus JH373 September 24 2014, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

P7 over P6. P10 still old.