nominate Lesser Black-backed Gull (L. f. fuscus)
Amir Ben Dov (Israel)
Hannu Koskinen (Finland)
Mars Muusse (the Netherlands)
Larus fuscus fuscus 4+cy female J127, July 2005 & June 2007, Horsvær, Nordland (65.19.09 N - 11.38.02 E), Norway. Picture: Morten Helberg.
J127, ringed as adult female on the nest, in 2005. Jet-black adult nominate fuscus, breeding on Horsvær, Nordland. This Archipelago contains a pure population of such dark fuscus birds. Picture below illustrates type of breeding habitat for this colony.
Here, you also see a map of Europe, with the ring readings for J127.
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.
above: 4+cy female J127, July 02 2005, Hortavær, Nordland, Norway. Picture: Morten Helberg.
below: 4+cy female J127, June 22 2007, Hortavær, Nordland, Norway. Picture: Morten Helberg.
With another black-ringed adult in the foreground.
below: J127, Ring readings. Picture: Morten Helberg.
The ringing research is described in fuscus adult March section and fuscus adult October section. All resights up to May 2008 are included in this research, in the three northern counties of Norway. Colonies could either consist of pure fuscus birds, or colonies could show mixed breeding birds, both pale-mantled birds and fuscus types. Adults were trapped during the incubation period in late June, using walk-in cages. In mixed colonies with pale and dark-mantled birds, sub-species were determined easily in the hand. 199 birds were caught: 172 fuscus, 22 pale-mantled birds and just 5 birds undetermined.