English: Swan's Nest, Caiwarro.
Date circa 1910
Source http://www.archivessearch.qld.gov.au/Image/DigitalImageDetails.aspx?ImageId=3164
Preferred citation: Queensland State Archives, Digital Image ID 3164
Author Water Supply Department
Place Paroo Shire
Source: https://commons.wikimedia.org/wiki/File:Queensland_State_Archives_3164_Swans_Nest_Caiwarro_c_1910.png

The black swan (Cygnus atratus) is a large waterbird, a species of swan, which breeds mainly in the southeast and southwest regions of Australia. Black swans are large birds with mostly black plumage and red bills. The black swan is common in the wetlands of southwestern and eastern Australia and adjacent coastal islands.