Great Black-backed Gull - marinus

Great Black-backed Gull- Grote Mantelmeeuw (marinus)

(last update: 14-2-2007)

gbbg 1cy Aug-Sept
gbbg 1cy October
gbbg 1cy November
gbbg 1cy December

gbbg 2cy January
gbbg 2cy February
gbbg 2cy March
gbbg 2cy April
gbbg 2cy May
gbbg 2cy June
gbbg 2cy July
gbbg 2cy August
gbbg 2cy September
gbbg 2cy Oct-Nov

gbbg 3cy January
gbbg 3cy February
gbbg 3cy March
gbbg 3cy April
gbbg 3cy May
gbbg 3cy June
gbbg 3cy July
gbbg 3cy August
gbbg 3cy September
gbbg 3cy October
gbbg 3cy December

gbbg sub-ad January
gbbg sub-ad February
gbbg sub-ad March
gbbg sub-ad April
gbbg sub-ad June
gbbg sub-ad July
gbbg sub-ad August
gbbg sub-ad September
gbbg sub-ad October
gbbg sub-ad November

gbbg ad Jan-April
gbbg ad June
gbbg ad July
gbbg ad August
gbbg ad September
gbbg ad October
gbbg ad November

*sub-adult: August*		*Great Black-backed Gull (Larus marinus) sub-adult JB42:* August 28 2003, IJmuiden, the Netherlands. P4 fully grown, P8-P10 still old. Tail completely white.
		*Great Black-backed Gull (Larus marinus) 4cy E703:* August 12 2004, Westkapelle, the Netherlands. Ringed in 2001, isle of Terschelling, the Netherlands.
		*Great Black-backed Gull (Larus marinus) sub-adult:* August 2000, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). Clearly an immature GBBG, which is replacing the greater coverts. Compared to 2nd calendar years, adults and near-adults are a few primaries behind in moult.
		*Great Black-backed Gull (Larus marinus) sub-adult:* August 11 2003, Boulogne/Mer, France (50.42 N - 01.34 E).
		*Great Black-backed Gull (Larus marinus) sub-adult:* August 11 2003, Boulogne/Mer, France (50.42 N - 01.34 E).
		*Great Black-backed Gull (Larus marinus) sub-adult:* August 2000, Etaples, France (50.34 N - 01.34 E). Another individual showing the combination of adult-like blackish scapulars and barred coverts and tertials. Note the black markings on the bill.
		*Great Black-backed Gulls (Larus marinus) sub-adult:* August 2000, Etaples, France (50.34 N - 01.34 E). Primary p7 almost fully grown and p10 still present.