nominate Lesser Black-backed Gull (L. f. fuscus)
(last update:
Amir Ben Dov (Israel)
Hannu Koskinen (Finland)
Mars Muusse (the Netherlands)
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 fuscus 2cy CRX6 March 13 2010, Ashdod. Picture Amir Ben Dov.
CPA6 has been ringed in Finland in 2009.
In many ways classic bird regarding moult devlopment. By mid March, scapulars replaced and many wing-coverts replaced. Mc, llc and inner gc replaced, central gc currently missing (exposing the secondaries underneath) and still some central gc juvenile (normal sequence in this bird, typically gc 8-10 will be replaced late). Upper tertials replaced, lower tertials still juvenile; central secondaries still old, juvenile. Central rectrices probably in active moult as well, but hard to determine. Primaries: at least P6-P10 old juvenile.
Birds in this stage of moult by March will probably return in Finland with all/most primaries replaced, and in complete 2nd gen plumage (see 2cy May, June and July sections).
above: 16 March 2010; below: 13 March 2010.
