Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull argenteus 2CY, May 22 2014, Katwijk, the Netherlands.

Juvenile flight feathers and coverts. Scaps replaced. Complete moult advanced: P1-P2 fully grown, P3 growing, P4-P6 missing, P7-P10 old juvenile.