Swans are birds of the family Anatidae within the genus Cygnus. There are six or seven species of swan in the genusCygnus The swans are the largest members of the waterfowl. Adults also have a patch of unfeathered skin between the eyes and bill. The sexes are alike in plumage, but males are generally bigger and heavier than females.
Found in Nort Asia, Nort Europe, America and Australia
Roots, Tubers, Stems and Leaves of aquatic and Submerged Plants.