Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull (argenteus) adult, April 17 2014, Katwijk, the Netherlands.

Adult flight feathers. P10 with broken sub-terminal band, only black spots at edge. Mirror on P9 on both outer and innerweb. Black diffuse line on innerweb and spot on outerweb of P5.