DescriptionTwo sightings from off Pacific coast. Bill and legs black. Adult uniform plain gray with whitish hood; flight feathers blackish with secondaries tipped white, forming broad white trailing edge to wing; tail gray with black subterminal band and white tip. Imature grayish brown, feathers of mantle narrowly edged paler; tail with black subterminal band and buff tip.
Habits and BehaviorIn its normal range a gull of sandy coastlines, sometimes feeding Sanderling like on ocean beaches, also offshore (but never far from land).
They usually feed on small crustacean known as a "aphid sea".