nominate Lesser Black-backed Gull (L. 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 04 2002, Stockholm, Sweden.

Probably a 2cy bird showing very advanced tail-feather replacement, showing a pattern commonly found in 3cy birds. The tail-feathers left and right are not exactly the same, but in both sides there appear to be a few all-white feathers. At the wintering grounds, all primaries were replaced for new second generation primaries and all 10 primaries are still present. The wing-coverts, scapulars and tertials are a mix of second and third generation feathers. Remarkable, the legs are slightly pale yellow and the basal half of the bill is lemon yellow, with a red spot on the lower mandible, obscured by the large black bill-band.
Tertials #3 - #4 are much fresher that #1 - #2 and #5 - #6 and were replaced very recently, probably after arrival in Scandinavia.
The greater coverts have much abrasion at the tips and  along the fringes, although the inner four greater coverts look darker brown and slightly fresher. In the median coverts, #3 - #4 are of the same condition as the central greater coverts, but the innermost and outer medians are much fresher. A few lower lesser coverts have been replaced recently as well, a moult sequence much in line with the partial autumn moult of 2cy graellsii / intermedius, be it three months earlier, in July. The lesser coverts look very abraded again, as the central greater coverts.
In the scapulars, about 75% has been moulted to third generation all dark fresh scapulars.