Great Black-backed Gull - marinus

Great Black-backed Gull- Grote Mantelmeeuw (marinus)

(last update: 12-2-2007)

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

*third calendar year: April*		Great *Black-backed Gull (Larus marinus) 3cy:* April 2001, IJmuiden, the Netherlands (52.27 N, 4.33 E). Recent replaced feathers are more adult-like in the blackish base and undefined pattern. Note the tail pattern.
		Great *Black-backed Gull (Larus marinus) 3cy:* April 19 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). It would be nice to find out whether this presence of a mirror on p10 is related to breeding latitude or not. Some northern birds may look very delayed in upper-part moult, but can relatively often be found with a mirror on p10.
		Great *Black-backed Gull (Larus marinus) 3cy:* April 19 2002, Le Portel - Boulogne sur Mer, France (50.42 N - 01.34 E). A bird with an ordinary p10 pattern. Note the very obvious inner primaries and the obvious dark second generation tail-band.