Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull argentatus sub-adult, March 02 2017, Katwijk, the Netherlands.

No ring, no provenance; 4CY or 5CY bird. Limited black in R5-R6. Dark grey upperparts, pale pink orbital ring, thayeri-pattern on P9, dark iris.