Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull (argenteus) PN adult, February 14 2010, De Panne, Belgium. Picture: Peter Adriaens. 

Yellow tibia PN, ringed as breeding adult in May 2008 at Vlissingen, the Netherland​s.

Dark iris, greenish tinge to bill, and black spot near gonys - all not quite expected in a full adult.