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| | Utah Division of Wildlife Resources |
 | | The trumpeter swan, Cygnus buccinator, once bred in much of North America, including Alaska, Canada, and a great deal of the United States. |
 | | Its current breeding range is much reduced, including only Alaska, parts of Canada, and localized areas of the northwestern and north-central United States. |
 | | A field guide to western birds, 3rd ed. |
| dwrcdc.nr.utah.gov /rsgis2/search/Display.asp?FlNm=cygnbucc (204 words) |
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