Black-tailed Gull L.
16th October 2002 Sakawagawa-river Odawara Kanagawa Japan
An early-molter. New first winter feathers are extending to wing-coverts, not only scapulars.
Note the greenish grey bill/legs, brownish grey mantle, broader black band on bill and lack of white spots to the primary tips, compared with adults.
Some adult winter birds often show "hooded" appearance like this in fall.
A normal adult winter.