Thayer's Gull (thayeri)

(last update: January 22, 2013)

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

Thayer's Gull adult, November 24 2013, Lake County, IL. Picture: Amar Ayyash.

Amar's blog.

Winter streaking. Purple orbital ring, honey coloured iris with some speckling (25-50%), saturated yellow bill and small red gonys spot. P9 fully grown, P10 growing.