Mute Swan
Cygnus olor
| Length: 58 inches | Wingspan: 7.5 feet | Seasonality: Wild birds unlikely |
| ID Keys: All white plumage, black lores and black knob, orange bill. | ||
The Mute Swan is an
introduced species, brought from Europe as an "ornamental"
species. Escaped birds have established wild populations in
scattered locations across North America. Populations are generally
increasing, with locally dense populations in the East causing concern about
competition with native waterfowl. The South
Dakota Ornithologist's Union lists the Mute Swan as
"hypothetical" in their 1991 book "The Birds of South
Dakota". A free flying bird observed in 1988 may have been a tame
bird that had escaped.
Habitat: Wide variety of aquatic habitats, including ponds, lakes, marshes, sloughs, and parks. Even wild populations are often found in close association with human settlements, but some are established in remote locations.
Diet: Mostly the seeds, leaves, and roots of aquatic plants. Will also feed on waste grain, grasses and sedges, insects, mollusks, and small fish.
Behavior: Feeds in the water by swimming on the surface, dabbling for food items on the surface, or reaching its head under water. Will also forage on land.
Breeding: Non-breeder in South Dakota
Song: Generally silent, but does have a variety of grunts and hisses.
Migration: Status unknown in the state, but northern populations generally do move south in the fall.
Interactive eBird map: Click here for an interactive ebird map of Mute Swan sightings
Similar Species: Trumpeter Swan, Tundra Swan
Status: North American populations continue to expand in number and range, competing with native waterfowl for resources in some areas.
Further Information: 1) USGS Patuxent Bird Identification InfoCenter, Mute Swan
Photo Information: May 9th, 2004 -- Arrowhead Park east of Sioux Falls -- Terry Sohl
Additional Photos: Click on the image chips or text links below for additional, higher-resolution Mute Swan photos.
| Click on the range map for a higher-resolution view |
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| South Dakota Status: Sightings of Mute Swans in South Dakota are generally assumed to be escapees or tame birds. |
Additional Mute Swan Photos
Click for a higher-resolution version of these photos
