|Swan Lake National Wildlife Refuge|
IUCN category IV (habitat/species management area)
Autumn trees standing in water in the refuge
|Location||Chariton County, Missouri, United States|
|Nearest city||Sumner, Missouri|
SWAN LAKE NATIONAL WILDLIFE REFUGE Latitude and Longitude:
|Area||10,795 acres (43.69 km2)|
|Governing body||U.S. Fish and Wildlife Service|
|Website||Swan Lake National Wildlife Refuge|
Swan Lake National Wildlife Refuge is a 10,795-acre (43.69 km2) National Wildlife Refuge established in 1937 and located in Chariton County, Missouri, 2 miles (3.2 km) south of the town of Sumner. It is located near the confluence of the Grand and Missouri Rivers.
The primary purpose of the refuge is to provide nesting, resting, and feeding areas for waterfowl, primarily ducks. Two-hundred and forty-one avian species have been observed residing on or passing through the refuge; another fourteen birds, listed under accidentals on the bird list, have been reported but are not normally expected to be present. An important secondary purpose was to preserve a remnant flock of prairie chickens. However, adequate grassland habitat to maintain a viable population of these birds was not available.
Since establishment of the refuge, the primary emphasis on waterfowl species has been expanded to include the Eastern Prairie Population of Canada geese. Canada geese were first observed using the refuge in the early 1940s, and numbers increased gradually to peak populations over 200,000 birds annually. Although these populations have steadily declined, Swan Lake is still considered a primary wintering area for Canada geese.