Northern Prairie Wildlife Research Center
Body: Very large bird, 20-38 pounds, 60-70 inches long. Adult white; immature grayish white. Primaries similar to Whistler. Adult feet and bill black with salmon red streak along edge of bill; immature, dull yellowish brown feet and black bill with pinkish markings on ridge and edge. Voice: Resonant trumpeting call. In Flight: Similar to the Tundra Swan. Generally local, nonmigrating populations.