nominate Lesser Black-backed Gull (L. f. fuscus)
Amir Ben Dov (Israel)
Hannu Koskinen (Finland)
Mars Muusse (the Netherlands)
Larus fuscus fuscus 13CY-16CY C5P4, 2009-2012, Ashdod. Pictures Amir Ben Dov & Yoav Perlman.
Bird ringed as pullus in Maksamaa, Finland (63.4505, 21.8769) on July 14 1997 by Risto Juvaste. Also seen in Israel in 1999, 2000, 2001. Ring becomes hard to read.
below: 13cy C5P4, December 08 2009, Ashdod. Picture Yoav Perlman.
Probably only P10 still old, P9 already shed.
below: 13cy C5P4, February 10 2009, Ashdod. Picture Amir Ben Dov.
P9 fully grown, P10 has to grow just a few inches. Note there is another bird standing right behind C5P4.
below: 15cy C5P4, March 08 2011, Ashdod. Picture Amir Ben Dov.
Black on bill.
below: 16cy C5P4, December 21 2012, Ashdod. Picture Amir Ben Dov.
P7/-. Complete moult in last stage. Again black on bill.