North America is home to three species of swans: the native trumpeter and tundra (formerly known as Whistling Swan), and the non-native mute. The trumpeter swan is the largest waterfowl in North America and the largest swan in the world.
The Trumpeter Swan's historic breeding range extended in a wide band from the Bering Sea east through almost all of Canada and south to Missouri, Illinois, and Indiana.
001-008.jpg courtesy: Us Fish & Wildlife Service
009-017.jpg courtesy: National Undersea Research Program
018-019.jpg courtesy: pdphoto.org
020-021.jpg courtesy: U.S. Bureau of Land Management
022-024.jpg courtesy: USDA