Thayer's Gull (thayeri)

(last update: January 22, 2013)

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

Thayer's Gull 1st cycle (2CY), January 19 2014, Marin County, California. Picture: Amar Ayyash.

Dark tail and pale window on inner primaries. Fine uniform dark texture on underparts and in the neck. Barred on uppertail coverts and rump.