nominate Lesser Black-backed Gull (L. f. fuscus)
Amir Ben Dov (Israel)
Hannu Koskinen (Finland)
Mars Muusse (the Netherlands)
Larus fuscus fuscus 3cy C4A1, July 09-17 2003, Tampere, Finland (61.33N 24.59E).
C4A1 was ringed in Pälkäne, Finland (61.36N 24.30E); ringed as pullus on June 26 2001.
Larus fuscus fuscus in 2cy often returns with completely replaced primaries and secondaries. In 3cy, fuscus more often shows a clear division between fresh inner primaries and older outer primaries, the inner primaries often showing neat white tips and the outer primaries often second generation-like with rounded tips and paler bleached brown. The arrested moult in the primaries is often reflected in the secondaries and (to a less extend) in the tail-feathers as well. The older tail-feathers (often R5 is older) still show a broad dark sub-terminal band.
C4A1 was ringed as pullus in 2001, now in 3cy. Prior to northbound migration, primary moult was arrested at P7: P1-P7 are typical 3rd generation, P8-P10 are bleached brown 2nd generation. By July, all primaries are still present, with a division between the new inner 7 primaries and the older 3 outer primaries. In general this individual looks much adult-like. Tail and secondaries replaced as well, although one rectrix with much brown.
Ringed as pullus on July 04 2000, C3RH is now (2003) in 4cy. A representative for sub-adult fuscus