Trumpeter Swans occur naturally in south-central and eastern Canada; southern half of Alaska and the northern parts of the United States, stretching from Washington State, northern Idaho, Montana, northern Wyoming, North and South Dakota, Nebraska, the northeastern corner of Kansas, Minnesota, Iowa, northern Missouri, Wisconsin, Illinois, Indiana and Michigan (Great Lakes states).
Trumpeter Swans average 54.3–62.2 inches (138–158 cm) in length, and have a wingspan of 7 - 8 feet (2.1 - 2.4 meters). An adult Trumpeter Swan stands about 4 feet (1.2 meters) tall.
They weigh between 17 - 28 lbs (7.7 - 12.7 kg). The males tend to be larger than females with an average weight of 28 lbs (12.7 kg); females weigh about 22 pounds (10 kg).
The plumage is all white; except the head and neck are often stained a dull tan or orange color due to exposure to iron-rich waters and mud as they dive under water to forage for food. They have a thick layer of down that protects them in subzero temperatures. Like all water birds, they spend a good amount of time preening their feathers. As part of preening, the swan presses the bill against an oil gland (located at the base of its tail) to extract a greasy fluid that they redistribute over their plumage to waterproof the feathers.
They have a long, straight neck - and fly with their neck stretched straight out in front of them.
The black bill is broad and flat, with fine tooth-like serrations along the edges that strain water as they eat aquatic vegetation. Along the base of the lower bill is orange-red stripe.