Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull (argenteus) ZX A 4CY (3rd cycle), March 25 2012, Koksijde, Belgium. Picture: Peter Adriaens.

3th-cycle argenteus ringed as pullus at Calais, France, in July 2009.

Adult-like primaries and secondaries. Mirrors on both P9 and P10.