Albert de Jong
Larus cachinnans 1CY PHUD October 202011, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.
Yellow PHUD and metal PLG DN-27578; ringed as pullus on May 26 2011 at Kozielno, Paczkow, S-SW Poland, (50°29' N, 16°58' E).
In this area are mixed breeding colonies (near Katowice), with far most birds breeding here are cachinnans, but in this area also records of very few michahellis from the south (e.g. ringed female from Italy) and argentatus from eastern Germany are possible (see PDF).
PHUD is classic cachinnans. Juvenile coverts are pale brown, 2nd gen scaps have greyish base. Classic pattern on tertials. Several inner coverts replaced for 2nd gen feathers. White on head, underwing and underparts.
below: together with big brother PHUK, from the same colony, ringed the same day.
below: P1-P4 with obvious pale apical spots on outerwebs.