Swan

Part of the family Anatidae, also includes geese and ducks. They mate for life unless the female can't come thru, so he goes in search of one that can. They can get big at 33 lbs.,, 60 inches in length, and a wingspan of 10'. Compared to the closely related geese they are much larger in size and have proportionally larger feet and necks. The sexes are alike in plumage, but males are generally bigger and heavier than females.