nominate Lesser Black-backed Gull (L. f. fuscus)

(last update: 9-11-2009)

Amir Ben Dov (Israel)
Hannu Koskinen (Finland)
Mars Muusse (the Netherlands)

fuscus rings

fuscus 1cy July
fuscus 1cy Aug
fuscus 1cy Sept
fuscus 1cy Oct
fuscus 1cy Nov
fuscus 1cy Dec

fuscus 2cy Jan
fuscus 2cy Feb
fuscus 2cy March
fuscus 2cy April
fuscus 2cy May
fuscus 2cy June
fuscus 2cy July
fuscus 2cy Aug
fuscus 2cy Sept
fuscus 2cy Oct
fuscus 2cy Nov

fuscus 2cy Dec

fuscus 3cy Jan
fuscus 3cy Feb
fuscus 3cy March
fuscus 3cy April
fuscus 3cy May
fuscus 3cy June
fuscus 3cy July
fuscus 3cy August

fuscus 3cy Sept

fuscus 3cy October
fuscus 3cy Nov
fuscus 3cy Dec

fuscus 4cy Jan
fuscus 4cy Feb
fuscus 4cy March
fuscus 4cy April
fuscus 4cy May
fuscus 4cy June
fuscus 4cy July
fuscus 4cy Aug
fuscus 4cy Sept

fuscus 4cy Oct
fuscus 4cy Nov
fuscus 4cy Dec

fuscus ad Jan
fuscus ad Feb
fuscus ad March
fuscus ad April
fuscus ad May
fuscus ad June
fuscus ad July
fuscus ad Aug
fuscus unringed Aug
fuscus ad Sept
fuscus ad Oct
fuscus ad Nov
fuscus ad Dec

(2 images) Larus fuscus fuscus 2cy, August 03 2002, Stockholm, Sweden.

This bird very much resembles the previous bird, but the primary moult was arrested. Fuscus may exhibit a complex moult in the primaries, as this individual shows: P1 is growing, P2 is missing, P3-P9 are second generation and P10 is still juvenile. Probably P1-P9 were included in the post-juvenile moult and moult was arrested at P9. Now this bird arrived in Stockholm and starts the complete moult, starting primary again at P1. In the top image note there is 2cy fuscus (described in detail here) in front, where it can be seen that all 10 primaries were included in the post-juvenile moult. That bird returned in Stockholm with 10 second generation primaries. 
The secondaries were all replaced during last winter-spring as the image of the flying bird demonstrates. Tertials #1-6 have all been replaced for second generation feathers. 
It's remarkable to see the wing-coverts look so much the same as the earlier described 2cy fuscus, again with the central median and lower lesser coverts much fresher. Nearly the exact wing-covert moult sequence can be found in this bird.