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ฮฑฦฦ Sษฏฮฑษณ Black Swans are large, black, waterbirds, native to Australia, belong to the swan family. They are easily recognized because of their dark feathers and their red beaks. Their unique colors and their beautiful appearance make them suitable for zoos and garden. Like most swans, a black swan has specific “S” neck shape and a large body. The bill is bright red, with a pale bar and tip. The legs and feet are greyish black. Its wingspan can reach about 180 cm or more and it can weigh up to 10 kilograms. The male swans are usually larger then the female ones. While swimming, a black swan will lift its wings off its back to make it look larger. This is done to intimidate its enemy. Like other swans, the black swans are monogamous. A male will choose a female and pair for life. Uniquely, some of the pairs are homosexual. They steal nests, or live threesome to get eggs and driving the females away after she lays the eggs. Generally, b