swan, common name for a large aquatic bird of both hemispheres, related to ducks and geese. It has a long, gracefully curved neck and an extremely long, convoluted trachea which makes possible its far-carrying calls. The orange-billed white trumpeter swan, Cygnus buccinator, seen in parks, is the mute swan, of Old World origin. It breeds in the wild state in parts of Europe, Asia, and the United States. During the breeding season it has a trumpetlike note, softer in the tame birds. The whistling swan migrates from the arctic to Mexico. Conservation measures saved the almost extinct trumpeter swan of North America, the largest species. Wild species in Europe include the whooper (or whooping) and the Bewick swans. The black swan, Chenopis atrata, is native to Australia, and the black-necked swan, Cygnus melancoriphus, to South America. The black swan has been domesticated. Swans are classified in the phylum Chordata , subphylum Vertebrata, class Aves, order Anseriformes, family Anatidae.
See study by P. Scott and the Wildfowl Trust (1972).
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
See more Encyclopedia articles on: Vertebrate Zoology
Browse By Subject
- Earth and the Environment +-
- History +-
- Literature and the Arts +-
- Medicine +-
- People +-
- Philosophy and Religion +-
- Places +-
- Australia and Oceania
- Britain, Ireland, France, and the Low Countries
- Commonwealth of Independent States and the Baltic Nations
- Germany, Scandinavia, and Central Europe
- Latin America and the Caribbean
- Oceans, Continents, and Polar Regions
- Spain, Portugal, Italy, Greece, and the Balkans
- United States, Canada, and Greenland
- Plants and Animals +-
- Science and Technology +-
- Social Sciences and the Law +-
- Sports and Everyday Life +-