Albert de Jong
Larus cachinnans 1CY P343 August 27 2013, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.
Green P343 and metal (PLG) DN22408, ringed as pullus on May 24 2013 at Kozielno Paczkow Opolskie Poland (50°28'35" N, 16°58'54" E). This is a mixed breeding colony in Poland, with most birds breeding here cachinnans, but in this area also records of very few michahellis are possible (see PDF). P343 obviously classic cachinnans.
Few upper scaps replaced, coverts and tertials still juvenile, but several moult gaps present.
below: location Kozielno water reservoirs, ringing location.
below: 2x cachinnans in juvenile plumage.
below: together with 1CY michahellis (right).
below: showing pale underwing.