where do black swans come from
The black swan (Cygnus atratus) is a large waterbird, a species of swan, which breeds mainly in the southeast and southwest regions of Australia. mature black swan measures between 110 and 142 centimetres (43 and 56 in) in length and weighs 3.7â9 kilograms (8.2â19.8 lb). Its wing span is between 1.6 and 2 metres (5.2 and 6.6 ft). The neck is long (relatively the longest neck among the swans) and curved in an S-shape.