Thayer's Gull (thayeri)
(last update: January 22, 2013)
Thayer's Gull adult, mid-January 2014, central California, US. Picture: Amar Ayyash.
Visit: Amar's blog for many more images!
Present flock of about >600 birds (170 1st cycles, 100 2nd cycles, 40 3rd cycles, 350 adults).
Purple orbital ring. Small red gonys spot on lower mandible. Pale yellow base of bill.
Primaries greyish-black. Obvious black band on P5.
Longer bill suggests male.