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Duck is the common name for numerous species in the waterfowl family Anatidae. Ducks are divided among several subfamilies in the family Anatidae; they do not represent a monophyletic group (the group of all descendants of a single common ancestral species) but a form taxon, since swans and geese are not considered ducks.
Ducks are sometimes confused with several types of unrelated water birds with similar forms, such as loons or divers, grebes, gallinules and coots.
They are 48 cm (19 in) long and have a wingspan of 76 cm (30 in) with a weight of 600 g (1.3 lb).
Lifespan in captivity is up to 30 years.
It ranges from 48–56 cm (19–22 in) in length and weighs 862–1,600 g (1.900–3.527 lb).
Lifespan in the wild – 22 years.
Length – 42-49 cm, wingspan – 72-82 cm, weight – 700-1100 g.
In captivity, these birds can live up to 20 years.
he wood duck is a medium-sized duck. A typical adult is from 47 to 54 cm (19 to 21 in) in length with a wingspan of between 66 to 73 cm (26 to 29 in).
This duck has a fairly short life expectancy at 3 to 4 years.
It ranges from 46 to 53 cm.
Lifespan in captivity is up to 30 years.
Adults reach a size of about 45–56 centimeters (18–22 in), weigh about 523–608 grams (1.153–1.340 lb).
Lifespan in captivity is up to 25 years.
On average, between 53 to 60 cm (21 to 24 inches)
measuring 50–70 cm (20–28 in) in length with a wingspan of 86–102 cm (34–40 in). On average, heavier than females, with a mean weight of 1.668 kg (3.68 lb).
Lifespan of these birds – about 19 years.
The adult male duck is 255-267 mm long, while the female is 240-250 mm.
The weight is approximately 1.63 kilograms for males and 1.6 kilograms for females.
The spectacled eider has a lifespan up to 15 years.
Harlequin ducks are between 35.6 and 50.8 centimeters and weigh 0.45 to 0.68 kilograms.
Lifespan in captivity can be 20 years.
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