Albert de Jong
Larus cachinnans 3CY P493 January 04 2014, Boulogne-sur-Mer, France. Picture: Jean-Michel Sauvage.
Green P493, ringed as pullus on May 27 2012 at Urszulin, Poland.
Classic, in showing grey scapular saddle and replaced grey median coverts. White underparts and head with streaking concentrated in hindneck ('boa').