IUCN threat status:

Least Concern (LC)

Distribution

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Distribution

Trumpeter swans were once abundant and widespread in North America.
Their breeding range extended from Alaska east to Ontario and south to
Oregon, the Rocky Mountains, Nebraska, and northern Missouri [20]. Now
only two major populations remain [4,17,20]. The Pacific population
breeds in Alaska and British Columbia, and winters along the Pacific
Coast from Alaska to northern Oregon [20,23]. The mid-continental
population nests in Alberta, British Columbia, Yukon, Northwest
Territories, Saskatchewan, and the Greater Yellowstone region [20,23].
Overhunting of trumpeter swans destroyed most of their traditional
migration patterns to southerly winter habitats. As a result, virtually
all mid-continental trumpeter swans, regardless of their summer range,
now winter in the Greater Yellowstone Ecosystem [23].

Trumpeter swans have been transplanted from Red Rock Lakes National
Wildlife Refuge, Montana, to several other National Wildlife Refuges
(NWR): Malheur NWR in Oregon, Ruby Lake NWR in Nevada, Lacreek NWR in
South Dakota, and Turnbull NWR in Washington. A small number of
breeding swans occur on all four refuges [4]. In Canada, attempts are
underway to reintroduce trumpeter swans in southern Ontario and in Elk
Island National Park [2].

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