Thayer's Gull (thayeri)

(last update: January 22, 2013)

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

Thayer's Gull 1st cycle (2CY), January 19 2011, Bodega Bay, CA. US. Picture: Peter Adriaens.

Dark tail and pale window on inner primaries. Fine uniform dark texture on underparts and in the neck. Barred on undertail coverts and vermiculation on axilaries.