Herring Gull 2cy E433 (argenteus), Febr & Nov 2006, Oostende, Belgium. Picture Walther Leers.
Bird ringed in Holland, summer 2005, probably before being released from captivity. Most scapulars replaced by February (end of winter); wing-coverts and tertials still juvenile.
E433 (argenteus), February 11 2006. Pictures Walther Leers.
E433 (argenteus), November 26 2006.