Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull (argenteus) FXAM 5CY (4th cycle), March 05 2010, Koksijde, Belgium. Picture: Peter Adriaens.

Ringed as pullus in 2006 at Zeebrugge, Belgium.

Dark centres on lesser primary coverts. Otherwise, no signs of immaturity.