Albert de Jong
Larus cachinnans 6CY-8CY 671P October 2008, September & November 2010, Boulogne-sur-Mer, NW France, Picture: Jean-Michel Sauvage.
Bird trapped at the nest, as breeding adult in a colony called "cachinnans-michahellis" in Poland. When birds are trapped as pullus, subsequent observations have to made to determine species. 671P green seems to be a fine cachinnans when grown up.
Species: LARUS CACHINNANS/MICHAHELLIS (LARUS CACHINNANS/MICHAHELLIS)
Photographie exceptionnelle car le pontique est un oiseau farouche.
below: cachinnans 6CY 671P 18 October 2008.
Moult score: P8/-.
below: cachinnans 8CY 671P 11 September 2010.
Moult score: P6/P9. Note missing central greater coverts, exposing secondaries underneath.
below: cachinnans 8CY 671P 10 November 2010.
Moult score: P9/-.