1st winter
Slaty-backed Gulls Larus schistisagus
16th 2007 Choshi Chiba Japan

An individual showing narrower tail band. The wing coverts also show well-notched pattern.

Note that the dark parts of the wings and the tail are brownish, not blackish. And the short-winged overall structure is typical.

A dark-winged bird.

A pale-winged bird

A bleached bird.

A Vega Gull for comparison.

Note that the dark parts are strongly blackish in comparison with Slaty-backed Gulls.