Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

Great Black-backed Gull (Larus marinus) JP140 1CY, 2CY & 6CY, December 2011, October 2012 & October 2016, Boulogne sur Mer, France (50.44 N - 01.35 E).  Picture Jean-Michel Sauvage.

Bird ringed at Kamferhof, Lindesnes, Vest-Agder, Norway (57°59'23"N 007°12'25"E) on July 04 2011.

Observations:
08.08 2011 Hirtshals Havn, Husmorstranden, Nordjylland, Denmark 57°35'43"N 009°57'26"E
05.10 2011 Calais Port, Pas-de-Calais, France 50°57'38"N 001°51'43"E
10.10 2011 Calais Port, Pas-de-Calais, France
12.10 2011 Calais Port, Pas-de-Calais, France
25.10 2011 Boulogne-sur-Mer beach, Pas-de-Calais, France 50°43'54"N 001°35'31"E
30.10 2011 Boulogne-sur-Mer harbour, Pas-de-Calais, France
04.12 2011 Boulogne-sur-Mer harbour, Pas-de-Calais, France JMS
05.01 2012 Boulogne-sur-Mer harbour, Pas-de-Calais, France JMS
06.02 2012 Boulogne-sur-Mer harbour, Pas-de-Calais, France JMS
18.02 2012 Boulogne-sur-Mer harbour, Pas-de-Calais, France JMS
28.02 2012 Boulogne-sur-Mer harbour, Pas-de-Calais, France JMS
16.04 2012 Boulogne-sur-Mer harbour, Pas-de-Calais, France JMS
11.10 2012 Outreau"bassin de la liane", Pas-de-Calais, France JMS
29.10 2012 Boulogne-sur-Mer harbour, Pas-de-Calais, JMS
12/03/2013 - Boulogne-sur-Mer Port, Pas-de-Calais, Fr
01/10/2013 - Boulogne-sur-Mer Port, Pas-de-Calais, Fr
27/10/2013 - Boulogne-sur-Mer Port, Pas-de-Calais, Fr
02/07/2014 - Kamferhof, Lindesnes, Vest-Agder, Norway - 57°59'23"N 007°12'25"E
15/08/2014 - Strouanne, Cap Blanc Nez, Pas-de-Calais, France - 50°54'07"N 001°41'08"E
21/09/2014 - Boulogne-sur-Mer Port, Pas-de-Calais, Fr
31/10/2014 - Boulogne-sur-Mer Port, Pas-de-Calais, Fr
02/11/2014 - Boulogne-sur-Mer "bassin Loubet", Pas-de-Calais, Fr
22/11/2015 - Boulogne-sur-Mer "bassin Loubet", Pas-de-Calais, Fr
19/12/2015 - Cap-Gris-Nez, Pas-de-Calais, France - 50°52'08"N 001°35'04"E
21/01/2016 - Boulogne-sur-Mer ( port de plaisance ), Pas-de-Calais, Fr
13/02/2016 - Boulogne-sur-Mer "bassin Loubet", Pas-de-Calais, Fr
17/10/2016 - Boulogne-sur-Mer "bassin Loubet", Pas-de-Calais, Fr

below: Great Black-backed Gull (Larus marinus) JP140 6CY, October 17 2016, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

P7/P10.

below: Great Black-backed Gull (Larus marinus) JP140 2CY, October 29 2012, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

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

below: Great Black-backed Gull (Larus marinus) JP140 1CY, December 04 2011, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Most of the upper scapulars and half of the lower scapulars replaced for 2nd gen feathers.