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   Swans are the largest members of the Waterfowl family and are among the largest flying birds. The largest species, including the Mute Swan, the Trumpeter Swan, and the Whooper Swan, can reach a length of over 1.5 m, weigh over 15 kg and their wingspans can be over 3.1 m. Swans utter a variety of sounds from the windpipe, which in some species is looped within the breastbone (as in Cranes); even the Mute Swan, the least vocal species, often hisses, makes soft snoring sounds, or grunts sharply.

 Adult Swans have a patch of unfeathered skin between the eyes and the bill. Both sexes are alike in plumage, but the males are generally bigger and heavier than female birds. Swans are omnivorous birds, but with a very vegetarian diet. They eat underwater vegetation such as; seaweed and various aquatic plants, when they are on the water. And they eat a mixture of plants, seeds and berries when they are on land. Swans also eat insects both water and land based and the occasional small fish.

  Although Swans only reach sexual maturity between 4 and 7 years, they can form socially monogamous pair bonds from as early as 20 months old. These bonds last for many years and in some cases can last for life. Swans build their nests on the ground near water out of twigs and leaves. Unlike many other Ducks and Geese, the male swan (Cob) helps with the nest construction. The female (Pen) lays 3 – 8 eggs and incubates them for 34 – 40 days 

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