Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

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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 March
lbbg 2cy April
lbbg 2cy May
lbbg 2cy June
lbbg 2cy July
lbbg 2cy August
lbbg 2cy September
lbbg 2cy October
lbbg 2cy November
lbbg 2cy December

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

lbbg sub-ad Jan
lbbg sub-ad Febr
lbbg sub-ad March
lbbg sub-ad 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 November
lbbg adult December

Lesser Black-backed Gull graellsii NLA 5.332.974 adult, May 03 2004, EMO Maasvlakte, the Netherlands (51.59N,04.02E). 

Arnhem 5.332.974, ringed as adult (5CY) in 2000 at Castricum.

NLA ...5332974 18-06-2000 Castricum, Noord-Holland, NL VRS - Castricum Wijker
NLA ...5332974 03-05-2004 Missouriweg 25, 3199 LB Maasvlakte Rotterdam, Nederland Melding - Muusse Muusse
NLA ...5332974 12-05-2012 Europaweg 855, Maasvlakte Rotterdam, Botlek, Zuid-Holland, NL R048 = Kleine Mantelmeeuw Keijser

The primary tips look very neat on this adult female. Note the extensive white mirror on P10, merging with the tip. It's often stated that females have smaller mirrors on P10 and often lack the P9 mirror, but the feature of a smaller sized mirror only applies for the average population; single individuals may show severe overlap. Besides the gender differences, there is also a tendency for smaller mirrors in eastern populations (compare UK graellsii with Finnish fuscus).
Note the black markings on the bill.