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third cycle Thayer's Gull
December
December 27, 1998. Lake Cunningham, San Jose, California. Photo by Mike Rogers.
Note the dark eye and deep pink legs. Third winter birds look essentially like adults, but note the pink shades as well as the black on the bill (rare on adult Thayer's). Look at the underside of the last primary; you can see the large white area.

February
February 14, 2012. Davis, California. Photo by Steve Hampton.
Another pale-eyed bird. This one has an adult primary pattern and a white tail, but an immature bill color. It may be exactly four years old.

February 14, 2012. Davis, California. Photo by Steve Hampton.
This bird is sporting a typical third year tail pattern-- a few dark spots; and a primary pattern close to adult.

February 20, 2011. Davis, California. Photo by Steve Hampton.
This bird has a honey-colored eye, which occurs regularly in Thayer's. This bird looks much like an adult, but note the dark in the bill and smudging on the belly. A faded second cycle Thayer's is lower left, while a first cycle Thayer's stands in the back.