Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull (argenteus) CHAF 4CY (3rd cycle), March 26 2011, Koksijde, Belgium. Picture: Peter Adriaens. 

Ringed as pullus in 2008, at Zeebrugge, Belgium.

Adult-like inner and central primaries. Small mirror on P10. Distinct black spot in tail.