Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull 4CY, February 18 2014, Katwijk, the Netherlands.

3rd gen flight feathers: adult-like inner and central primaries, no mirror on P9 or P10. Secondaries grey with white tips, but much dark on centres.

Much black in tail. Brown markings on many coverts.