The group of swans called a flock of swans. The color of all swans is plain white except for the black swan. In this species of birds, white wing wing feathers stand out against a common black background, and the black neck swan also stands out against a white background. Paws of swans are black, beak is black, yellow or red, many species at the base of the beak have a conical thickening.
Swans are widespread in Eurasia, North and South America and Australia. These birds live on the banks of water bodies, and they can settle both on relatively small rivers and lakes, and on the shores of large bodies of water – in the sea lagoons and estuaries.
All species of swans can be conditionally divided into 2 groups: northern species prefer to live in the temperate zone and are most often found in the tundra and northern forests, the southern ones live on lakes and marshes of the tropical zone.
The southern species are sedentary, and the northern species are migratory. Eurasian species of swans winter in Central and South Asia (India, the Caspian Sea) and in the Mediterranean, American swans spend the winter on the California coast and in Florida.