Thayer's Gull (thayeri)

(last update: January 22, 2013)

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

Thayer's Gull 1st cycle (2CY), February 03 2013, Boulder County, Colorado. Picture: Amar Ayyash.

Amar's blog.

Paler individual, with chequered pattern on grater coverts, still in juvenile plumage by February.