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Swans are birds of the family Anatidae within the genus Cygnus. The swans' closest relatives include the geese and ducks. There are six living and many extinct species of swan.
Adult whooper swans are large birds, with an average length of 1.4 to 1.65 m and a wingspan of 2.05 to 2.75 m. Male weights range from 7.4 to 14 kg with an average of 9.8 kg, which is much heavier than the female weight range of 8.2 to 9.2 kg.
Mute swans are large birds, measuring 144 to 158 cm. The wingspan is 2 to 2.5 meters.
Mute swans usually live less than 10 years in the wild.
Mature black swans measure between 110 and 142 centimeters (43 and 56 in) in length and weigh 3.7–9 kilograms (8.2–19.8 lb). Their wing span is between 1.6 and 2 meters (5.2 and 6.6 ft).
Black swans have been known to live for forty years in the wild.
Adults average 102 to 124 cm (40 to 49 in) and weigh 3.5 to 6.7 kg (7.7 to 14.8 lb). The wingspan ranges from 135 to 177 cm (53 to 70 in).
The average life expectancy is 10 years.
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