Lesser Black-backed Gull (graellsii & intermedius)

(last update: 22-2-2011)


LBBG rings

lbbg 1cy May
lbbg 1cy June
lbbg 1cy July
lbbg 1cy August
lbbg 1cy September
lbbg 1cy October
lbbg 1cy November
lbbg 1cy December

lbbg 2cy January
lbbg 2cy February
lbbg 2cy Mar-April
lbbg 2cy May
lbbg 2cy June
lbbg 2cy July
lbbg 2cy August
lbbg 2cy September
lbbg 2cy October
lbbg 2cy Nov - Dec

lbbg 3cy Jan-April
lbbg 3cy May
lbbg 3cy June
lbbg 3cy July
lbbg 3cy August
lbbg 3cy September
lbbg 3cy October
lbbg 3cy Nov - Dec

lbbg sub-ad Jan-April
lbbg sub-ad May
lbbg sub-ad June
lbbg sub-ad July
lbbg sub-ad Aug
lbbg sub-ad Sept
lbbg sub-ad Oct
lbbg sub-ad Nov
lbbg sub-ad Dec

lbbg adult January
lbbg adult February
lbbg adult March
lbbg adult April
lbbg adult May
lbbg adult June
lbbg adult July
lbbg adult August
lbbg adult September
lbbg adult October
lbbg adult Nov - Dec

LBBG 3cySeptember 02 2001, ECT parking - Maasvlakte, the Netherlands.

Primary moult: P6 full-grown, P9-10 still old. The old second generation P10 shows no mirror. Moult score 35, which is average by early September. Note the inner primaries, which have faded dark centres, not as pure grey as in full-adult plumage. 3cy LBBG may show sub-terminal black markings on p3 and sometimes p2.
Note also the outermost secondary, which has now developed into a grey-centred, white-tipped flight-feather, clearly contrasting with the old brown-based and abraded second generation secondaries, of which two are just visible beneath the tertials (hence the innermost secondaries).

Note the immature brown lesser coverts and the white tips of the tertials confined to the inner tip. Note also the print of p8, visible on p9 now p8 has been shed. In very bleached primaries, the effect of such prints can be very obvious and reading correct primary moult stage in some individuals needs close views.