Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)
Larus cachinnans 1cy-2cy PUNU August 21 2010, Lubna, Poland & March 2011, Vrbice, Czech Republic. Picture: Michal Rycak & Dusan Boucny.
Ringed in Ukraine as pullus on June 05 2010 at Cherkasy Kreminchuk reservoir. Metal L-009686.
below: 1cy PUNU August 21 2010, Lubna, Poland. Picture: Michal Rycak.
Active moult in scapulars, with large moult gaps. Pale underwing.
below: 2cy PUNU March 2011, Vrbice, Czech Republic. Picture: Dusan Boucny.
2CY Caspian Gull (first-winter plumage). This is a textbook bird in every respect, and it has the ring to prove its credentials. However, not all Caspian Gulls are this distinctive, and not all carry a helpful ring. Unringed and less typical individuals can create identification headaches, especially given the problems posed by hybrid Caspian x Herring Gulls.
Note that the 'boa in the neck' consists of fine-streaked 2nd gen feathers.