Swan
swan is a
genus of birds of the family Anatidae , they are known for their curved neck ,
and their beautiful white feathers , some species have a black plumage . Their
feet are webbed . the small swan are called cygnets .
The swans are the largest members of the duck family Anatidae , and are amongst the largest flying birds, weighing up to 15 kg and measuring about 1.50 m. Compared with geese , they are both larger in size and have feet and neck proportionately larger
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