Swan Pet

- Mute Swan, Cygnus olor, is a Eurasian species that occurs at lower latitudes than Whooper Swan and Bewick's Swan across Europe into southern Russia, China and the Russian Maritimes. Recent fossil records, according to the British Ornithological Union, show Cygnus olor is among the oldest bird species still extant and it has been upgraded to "native" species in several European countries, since this bird has been found in fossil and bog specimens dating back thousands of years. Common temperate Eurasian species, often semi-domesticated; descendants of domestic flocks are naturalized in the United States and elsewhere.
• Subgenus Chenopis
- Black Swan, Cygnus atratus of Australia, and introduced in New Zealand.
- New Zealand Swan, Cygnus atratus sumnerensis, an extinct subspecies of the Black Swan from New Zealand and the Chatham Islands.