IUCN threat status:

Least Concern (LC)


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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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