This small bird is similar in size and some plumage characteristics to the little gull.
It is slightly larger and longer winged than that species, and has more-pointed wings and a wedge-shaped tail.
Its legs are red.
Summer adults are pale grey above and white below, with a pink flush to the breast, and a neat black neck ring.
In winter, the breast tints and neck collar are lost and a small dark crescent develops behind the eye.

Young birds resemble winter adults, but have a dark "W" pattern on the wings in flight, like young little gulls.
The juveniles take two years to attain full adult plumage.
This small bird is similar in size and some plumage characteristics to the little gull. It is slightly larger and longer winged than that species, and has more-pointed wings and a wedge-shaped tail. Its legs are red. Summer adults are pale grey above and white below, with a pink flush to the breast, and a neat black neck ring. In winter, the breast tints and neck collar are lost and a small dark crescent develops behind the eye.
Young birds resemble winter adults, but have a dark "W" pattern on the wings in flight, like young little gulls. The juveniles take two years to attain full adult plumage.
Ross's gull