Nonnatives - Mute Swan

Mute Swan - Cygnus olor

Florida's Nonnative Wildlife. Species detail.

First year: 1967

Extirpated year:

Established status: Species are present but not confirmed to be breeding. Population persists only with repeated introductions and/or escapes of individuals.

Estimated Florida range: 1 county  At least 10 years, 9 counties  Not reported breeding

Statewide trend: Unknown status

Threats to natives:  The mute swan is a large bird and has raised some concerns about its impacts on native species. Overgrazing aquatic vegetation, displacing native waterfowl, and trampling of nests and nestlings of native birds are all a concern.

Species Account: Native to Eurasia, where it has been bred aviculturally since Greek times, and most free-flying populations exist in domestic situations. In Florida, Mute Swans are introduced on public or private lakes by municipalities, property owner associations, and golf courses, where they sometimes establish a local, feral population. It primarily feeds on aquatic vegetation and occasionally on grain, terrestrial grasses, and aquatic inverebrates (Johnsgard 1978).

Habitats: Lake

County First Year Extirpated Year Breeding status Notes
Bay 1992   Not reported breeding  
Brevard 1960's   Not reported breeding  
Dade 1960's   Not reported breeding  
DeSoto 1960's   Not reported breeding  
Hillsborough 1960's   Not reported breeding Probable breeding reported
(Florida BBA 1986-91).
Martin 1960's   Not reported breeding  
Orange 1960's   Not reported breeding  
Palm Beach 1960's   Not reported breeding  
Pinellas 1960's   Not reported breeding  
Polk 1957   At least 10 years A population of ca. 80 birds
is maintained by the City of
Lakeland (Florida BBA 1986-91)


Ciaranca, M. A., C. C. Allin, and G. S. Jones. 1997. Mute Swan (Cygnus olor) In Birds of North America, No. 273 (A. Poole and F. Gill, eds.) The Birds of North America, Inc, Philadelphia, PA.

Johnsgard, P. A. 1978. Ducks, geese, and swans of the world. University of Nebraska Press, Lincoln, Nebraska.

Robertson, W. B., and G. E. Woolfenden. 1992. Florida bird species: an annotated list. Florida Ornithological Society, Gainesville, Florida, USA.

Stevenson, H. M., and B. H. Anderson. 1994. The birdlife of Florida. University Press of Florida, Gainesville, Florida, USA.

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FWC Facts:
Johnson's seagrass (Halophila johnsonii) lives only in Florida, and is the only federally listed threatened marine plant species.

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