Seagull (scientific name: Larus canus) is a medium-sized seagull. Legs and spotless rings have narrow green and yellow mouths, white tails, white tips of primary flight feathers, and large white wing mirrors. In winter, the head and neck are scattered with brown fine lines, and sometimes the corners of the mouth are black. Seagulls are handsome and charming, and their feathers are white as snow. Seagulls are migratory birds, distributed in Europe, Asia to Alaska and western North America. Found in the northeastern province of China during the migration. Overwintering in the whole coastal areas including Hainan Island and Taiwan Province Province; It also exists in most inland lakes and rivers in eastern and southern China. There are two explanations for seagulls: seagulls in a broad sense are the general name of more than 40 species of seabirds in Gully Family; Seagull in a narrow sense is a species of Gull and Gull.