Larus cachinnans

(last update: February 16, 2013)

Greg Neubauer
Marcin Przymencki
Albert de Jong
Mars Muusse


cachinnans plumages

Larus cachinnans adult, June 22 2012, Baku landfill, Azerbaijan. Picture: Chris Gibbins.

Long white tongue on P10 connected with mirror and tip, medial band broken ("thayeri" pattern). Large mirror on P10, no sub-terminal black. Large mirror on P9 and also broken medial band ("thayeri" pattern).
Speckling category: 1-5%. Colour of iris: pale yellow.
Red gape and orbital ring. Yellowish legs.
Measurement of bill dimension from picture: 3,02 = very long and slim, with little/no visible gonydeal angle (L:D ratio >2.8) = trait score 0.