Thayer's Gull (thayeri)
(last update: January 22, 2013)
Thayer's Gull 1st cycle (2CY), 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).
Blackish bill, dark iris.
Several scapulars replaced, with anchor pattern and fresh feathers show greyish base