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

(last update: 1-1-2010)

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

Larus fuscus intermedius J5V1 October 27 2007 & May 24 2008, Amsterdam, the Netherlands. Pictures: Ruud Altenburg.

J5V1, is a juvenile Lesser Black-backed Gull, ringed on Heimlaukøya Lemmingsvær, Tranøy, Troms, Norway (69°01'36"N 016°52'35"E). This colony of about 45 breeding pairs contains a mixed population of dark fuscus birds, but also pale-mantled birds (graellsii / intermedius). Lemmingsvær holds one of the larger colonies in northern Norway, and ringing started already in 2002, with now 226 birds ringed in the period 2002-2008. Maximum breeding pairs is 45 birds for this location, with about 50% of these breeders being pale-mantled birds (origin either from graellsii populations from the west or intermedius birds colonising from southern Norway).

J5V1 is in complete juvenile plumage in October, and shows in May limited post-juvenile moult from the winter quarters. Together with western migration route suggests an offspring of intermedius brood. Post-juvenile moult included several tertials, inner greater coverts, inner and several central median coverts and scapulars.

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.