Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull (argenteus) CRAC 4CY-5CY (3rd - 5th cycle), May 2011 - December 2012, Koksijde, Belgium. Picture: Peter Adriaens. 

Ringed as pullus in June 2008 at Oostende, Belgium.

Herring Gull (argenteus) CRAC 5CY (5th cycle), December 19 2012, Koksijde, Belgium. Picture: Peter Adriaens. 

No sign of immaturity.

Herring Gull (argenteus) CRAC 5CY (4th cycle), February 12 2012, Koksijde, Belgium. Picture: Peter Adriaens. 

No sign of immaturity.

Herring Gull (argenteus) CRAC 4CY (moulting into 4th cycle), July 31 2011, Koksijde, Belgium. Picture: Peter Adriaens. 

P3/P7.

below: Herring Gull (argenteus) CRAC 4CY (3rd cycle), May 22 2011, Koksijde, Belgium. Picture: Peter Adriaens. 

P1-P10 old. Adult-like inner and central primaries. Small mirror on P10.