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Trumpeter Swan: Largest swan in the world, completely white but with head and neck often stained rust-brown from contact with ferrous minerals in wetland soils. Bill, legs, and feet are black. Feeds on aquatic plants. Strong direct flight on steady wing beats. Flies in straight line or V formation.
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Tundra Swan: This small swan is completely snowy white. Its head and neck is often stained rust-brown from ferrous minerals in marsh soils. It has a black bill with a yellow spot at the base and black legs and feet. Diet includes aquatic vegetation and grass. Strong direct flight on steady wing beats. Flies in straight line or V formation. Most common swan in North America. Sexes are similar.
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