The word gull, bird, has a big head, a flat mouth, webbed front toes, long and pointed wings and mostly white feathers. Most people live by the sea and mainly prey on fish, such as seagulls and black-tailed gulls. Seagull (scientific name: Larus canus): It is a medium-sized seabird, belonging to Silurus, Gully and Gully. Weight 394-586 grams; The body length is 451-510mm, and the life span is 24 years. Adult bird Stephane: the head and neck are white, and the back and shoulders are gray slates; The feathers on the wings are also slate gray, the same color as the back; The waist and tail feathers are all pure white. The primary flying feather has a white tip and a white wing mirror. In winter, the head and neck are scattered with brown fine lines, and sometimes the corners of the mouth are black. Iris yellow; The mouth, feet and toes are light green and yellow.

Seagulls are migratory birds. The breeding season mainly inhabits rivers, lakes, ponds and swamps in Arctic tundra, forest tundra, desert and grassland, and mainly inhabits coasts, estuaries and harbors in winter. Move in pairs or groups or fly in the air. At the seaside and seaport, groups float on the water, swimming and foraging. Seagulls feed on small fish, insects, mollusks, crustaceans, worms and grubs in cultivated land.

This species breeds in northern Europe, North Asia and northwest North America. Except for Iceland, populations near the North Sea and the Baltic Sea, and some seagulls along the coast of Canada, most seagulls migrate to the south. This has expanded its scope, including the Pacific coast of North America to Baja California in Mexico, the Pacific coast of Asia to northern Vietnam, the Atlantic coast of France and Portugal, the southern and eastern coasts of the Mediterranean, the entire Black Sea coast and Persian Gulf, and the southern coast of the Caspian Sea.