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

(last update: 20-1-2010)

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

(4 images) Larus fuscus fuscus adult J20E October 2009, January & March 2010, Ashdod, Israel. Pictures Amir Ben Dov.

J20E was ringed in northern Norway, as an adult (4+cy, sex unknown) at the nest. The colony only holds dark mantled birds (nominate fuscus). It was ringed on June 22 2007 at Lislandholmen, Nordhorsvær, Sømna, Nordland, Norway (65°19'24"N 011°36'33"E).

More information about migration strategies in Norwegian fuscus and the ringing programme in the three northern counties of Norway: Nordland, Troms and Finnmark, can be found here: The summary for juveniles can be found in the fuscus 1cy October section, the summary for adults can be found in the fuscus adult October section.
Morten Helberg, Geir Systad, Ingve Birkeland, Nils Lorentzen & Jan Bustnes published an article about this research in Ardea 97, 2009, titled: Migration patterns of adult and juvenile Lesser Black-backed Gulls Larus fuscus from northern Norway. The complete PDF can be found HERE.

above: J20E October 31 2009, Ashdod, Israel. Pictures Amir Ben Dov.

P1-P4 fully grown, P5 growing, P6 missing, P7-P10 old. Secondaries and rectrices old. Adult fuscus wihich is active primary moult in the inner primaries, as is typical for nominate fuscus in October. Ill-defined head streaking in the hind neck and a small black smudge on the bill. Red gonydeal spot doesn't exceed on the upper mandible. Upperpart colour rather pale grey, obvious paler than black sub-terminal bands on the new inner primaries. Wing covert moult in progress, simultaneous with primary moult, most obvious in missing central greater coverts and fresh inner median coverts.

below: J20E January 02 2010, Ashdod, Israel. Picture Amir Ben Dov.

Difficult to say anything substantial, except that P10 is still old.

below: J20E March 26 2010, Ashdod, Israel. Picture Amir Ben Dov.

Interesting individual. By March, all primaries are new now (P7 most probably folded under P8, sugesting a moult gap in the outer primaries which is hard to believe when you see the pictures above and know the moult strategy in this bird).
However, tertial #2 growing and several mc & llc missing and recently replaced mc. Hence, a partial moult in the wing-coverts by March in this N Norwegian bird??? Similar moult can be found in this J0X0, also from N Norway. So far, we have not recorded it in any of the Finnish ringed full adult birds in March.