Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull (argenteus) CFAR 4CY (3rd cycle), May 15-28 2011, Oostende, Belgium. Picture: Peter Adriaens. 

Ringed as pullus on July 11 2008 at Zeebrugge (Voorhaven), West-Vlaanderen, Belgium (51°21'0''N 3°11'0''E).

below: Herring Gull (argenteus) CFAR 4CY (3rd cycle), May 28 2011, Oostende, Belgium. Picture: Peter Adriaens. 

Moult in coverts.

below: Herring Gull (argenteus) CFAR 4CY (3rd cycle), May 15 2011, Oostende, Belgium. Picture: Peter Adriaens. 

Adult-like inner and central primaries.