January 17th 2012 Choshi Chiba Japan
Note the very typical overall structure and coloration. This type of birds are usually quite easy to distinguish from Vega Gulls.
A faded, but still relatively fresh individual.
This looks very like the above one, but has more worn scapulars and coverts.
A fresh and dark individual recalling American Herring Gull. But note the short-winged, stubby overall structure and pale fringes to the primary tips.