Ponds, lakes, and marshes, breeding in areas of reeds, sedges or similar emergent vegetation, primarily on freshwater, occasionally in brackish situations (AOU 1983). Prefer water bodies with ample room from take off and structure (such as an island) for nesting (Mitchell 1994).
AOU. 1983. Check-list of North American birds. 6th ed.American Ornithologists’ Union, Washington D. C.
Mitchell, C. D. 1994. Trumpeter Swan (Cygnus buccinator). In The Birds of North America, Vol. 3, No. 105 (A. Poole and F. Gill, Eds.). Philadelphia: The Academy of Natural Sciences; Washington, D.C.: The American Ornithologists’ Union.