Slaty-backed Gull (Larus schistisagus)

Adult Slaty-backed Gull	Adult Slaty-backed Gull	Adult Slaty-backed Gull	Fourth Winter Slaty-backed Gull	Second Winter Slaty-backed Gull
Second Winter Slaty-backed Gull	Third Winter Slaty-backed Gull	Third Winter Slaty-backed Gull	Third Winter Slaty-backed Gull	Third Winter Slaty-backed Gull
Third Winter Slaty-backed Gull	Third Winter Slaty-backed Gull