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Cygnus olor
Mute Swans are large, all-white swans that are recognized by an orange bill, which is black at the base. A prominent black knob is at the base of the bill. Another distinctive characteristic is a curved neck held in an S-shape, with the bill pointed downward while the bird is swimming. Individuals weigh an average of 25 pounds and have a wingspan of 7 to 8 feet. Male (cob) and female (pen) mute swans are essentially identical in appearance, except that the male is usually larger and has a more prominent knob on the forehead.
Mute swans are associated with both tidal and freshwater wetlands. They can be found in ponds, slow rivers, coastal bays, and inland lakes. Mostly herbivorous, swans have a voracious appetite for submerged aquatic vegetation.
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