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Swan (bird) - MSN Encarta |
 | | Its counterpart in the Eastern Hemisphere is the whooper swan, which has a large yellow patch on the side of the bill and a differently shaped trachea. |
 | | The fl swan, a red-billed bird that resembles the mute swan in shape, inhabits Australia, and the fl-necked swan is confined to southern South America. |
 | | The mute swan is classified as Cygnus olor, the trumpeter swan as Cygnus buccinator, the whooper swan as Cygnus cygnus, the tundra swan as Cygnus columbianus, the fl swan as Cygnus atratus, the fl-necked swan as Cygnus melanocorypha, and the coscoroba swan as Coscoroba coscoroba. |
| encarta.msn.com /encnet/refpages/RefArticle.aspx?refid=761574136 (466 words) |
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