Mongolian Gull L.c?mongolicus
9th November 2002 Choshi Chiba Japan
Juvenile probable Mongolian Gull (left) and a Vega Gull (right).
Lots of juvenile Vega Gulls, and Mongolian or Mongolian-like Gulls were seen on the day. All photos in this page show the same individual.
The left bird is a Slaty-backed Gull