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)

gbbg rings
gbbg PDF's

gbbg 1cy August
gbbg 1cy September
gbbg 1cy October
gbbg 1cy November
gbbg 1cy December

gbbg 2cy January
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gbbg 2cy September
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gbbg 3cy January
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gbbg 3cy May
gbbg 3cy June
gbbg 3cy July
gbbg 3cy August
gbbg 3cy September
gbbg 3cy October
gbbg 3cy November
gbbg 3cy December

gbbg sub-ad January
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gbbg ad January
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Great Black-backed Gull (Larus marinus) 48C 2cy: 2008-2009-2010, Boulogne sur Mer, France (50.44 N - 01.35 E). Picture Jean-Michel Sauvage.

Ringed as pullus in Le Havre. Eggs hatched on May 31 2007, pulli ringed on June 30 2007.

below: 48C 2cy: May 14 2008, Boulogne sur Mer.

Scapulars replaced, wing-coverts and tertials juvenile.

below: 48C 2cy: September 02 2008, Boulogne sur Mer.

Complete moult in last stage. P9 fully grown. Gap in central gc just closing.

below: 48C 3cy: March 12 2009, Boulogne sur Mer.

Observed in Boulogne-sur-Mer, Pas-de-Calais, France in 2007, 2008, 2009.
But it has been recorded as well at Dives-sur-Mer, Calvados, France on November 11 2008.

below: 48C 4cy: July 31 2010, Boulogne sur Mer.

Adult like 4cy bird. No red on the bill.