2013 Tokyo Imperial Palace, Japan
Note the white head-breast, rough texture of wing coverts
and contrasty overall coloration. The streaking on hindneck is thin and
The Mongolian Gull in center with 2 Vega
Gulls of the same age.
Note the narrow tail band.
The underwing shows sharp spotts on the white ground
For comparison: Unidentified 2nd winter gull
(bleached Vega Gull?) on the same date. At first glance, this also looks like a
Mongolian Gull. But the overall coloration looks less contrasty, and some
soft smudges are visible on the hindneck to breast side.
tail band is broader.