Thayer's Gull (thayeri)

(last update: January 22, 2013)

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

Thayer's Gull sub-adult, November 30 2013, Lake County, IL. Picture: Amar Ayyash.

Amar's blog.

Either 3rd or 4th cycle bird. Still black in tail and brown wash over many of the coverts.