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) JT811 2CY-4CY, July 2015 - August 2017, Boulogne-sur-Mer, France. Picture: Jean-Michel Sauvage.

Ringed as pullus on July 02 2014 at Langholmen, Strand, Rogaland, Norway (58°59'55"N 005°53'59"E).

Recoveries:
25;29/12/2014 - Boulogne-sur-Mer, Pas-de-Calais, France - 50°43'38"N 001°35'14"E
02/01/2015 - Boulogne-sur-Mer, Pas-de-Calais, Fr
10/01/2015 - Outreau "bassin de la liane", Pas-de-Calais, France - 50°42'23"N 001°36'33"E
20/01/2015 - Boulogne-sur-Mer, Pas-de-Calais, Fr
09/02/2015 - Boulogne-sur-Mer, Pas-de-Calais, Fr
02;11;16/03/2015 - Boulogne-sur-Mer , Pas-de-Calais, Fr
20/04/2015 - Boulogne-sur-Mer, Pas-de-Calais, Fr
05;09;16;18;19/05/2015 - Boulogne-sur-Mer, Pas-de-Calais, Fr
22;27.05/2015 - Boulogne-sur-Mer, Pas-de-Calais, Fr
15;17/06/2015 - Boulogne-sur-Mer, Pas-de-Calais, Fr
06;30/07/2015 - Boulogne-sur-Mer, Pas-de-Calais, Fr
06;07/08/2015 - Boulogne-sur-Mer, Pas-de-Calais, Fr
07;12;15;16;24;27/08/2015 - Boulogne-sur-mer, Pas-de-Calais, Fr
27/08/2015 - Boulogne-sur-Mer,Pas-de-Calais, Fr
11/09/2015 - Boulogne-sur-mer,Pas-de-Calais, Fr
06;10;14/10/2015 - Boulogne-sur-Mer,Pas-de-Calais, Fr
01/11/2015 - Boulogne-sur-mer
08;20;29;30/12/2015 - Boulogne-sur-mer
14/02/2016 Boulogne-sur-mer
03/03/2016 Boulogne-sur-mer
27/07/2016 Boulogne-sur-mer
04;14;23;28/09/2016 Boulogne-sur-mer
06;08;11;13;14;28/10/2016 - Boulogne-sur-mer
02;22/11/2016 - Boulogne-sur-mer
28/05/2017 - Revtangen, Klepp, Rogaland, Norway- 58°45'08"N 005°29'24"E
29/07/2017 - Boulogne-sur-mer
04;10/08/2017 - Boulogne-sur-mer

below: Great Black-backed Gull (Larus marinus) JT811 4CY, August 10 2017, Boulogne-sur-Mer, France. Picture: Jean-Michel Sauvage.

P4/P7.

below: Great Black-backed Gull (Larus marinus) JT811 3CY, September 06 2016, Boulogne-sur-Mer, France. Picture: Jean-Michel Sauvage.

P7/P10.

below: Great Black-backed Gull (Larus marinus) JT811 2CY, October 14 2015, Boulogne-sur-Mer, France. Picture: Jean-Michel Sauvage.

Partial moult started with upper TT, inner GC, inner MC and LLC, and several central LLC.

below: Great Black-backed Gull (Larus marinus) JT811 2CY, July 08 2015, Boulogne-sur-Mer, France. Picture: Jean-Michel Sauvage.

Several observations at Boulogne from last winter until today. Bird in complete moult, still old rectrices.