Herring Gull (argentatus & argenteus)
(last update: February 11, 2013)
Herring Gull 2cy, July 18 2013, Noordwijk, the Netherlands.
Active moult / complete moult in summer months: P7/P10.
Active moult in secondaries and tail as well. Outer secondaries missing/growing. Central and inner secondaries still juvenile. All(?) tail-feathers missing/growing.
Many coverts renewed. Greater covert row almost closed.
Below: with another 2CY Herring Gull: P5/P9.