Albert de Jong
Larus cachinnans 2CY-3CY PEVP February 2012 & October 2013, the Netherlands. Picture: Willem-Jan Fontijn & Maarten van Kleinwee.
Yellow PEVP and metal PLG DN-27086; ringed as pullus on May 24 2011 at Jankowice Babice Malopolskie, Poland (50,03 19,47).
below: cachinnans 2CY PEVP February 19 2012, Groningen, the Netherlands. Picture: Willem-Jan Fontijn.
Classic 1W bird, with replaced upper tertials and many inner coverts. White-headed bird with obvious neck boa.
below: cachinnans 3CY PEVP October 18 2013, Westkapelle, the Netherlands. Picture: Maarten van Kleinwee.
Very mature bird, as older 4CY bird in plumage. Large mirror on P9 and P10.