Thayer's Gull (thayeri)

(last update: January 22, 2013)

Coordinators:
Amar Ayyash (USA)
Mars Muusse (Netherlands)

Thayer's Gull adult, October 09 2015, New Buffalo, Michigan, US. Picture: Amar Ayyash.

Visit: Amar's blog: Anything Larus.

Last phase of complete moult, P6/P9. Moult gap in central GC exposing secondaries underneath. Black on P5. Dark eyed bird.