Range: Southern Alaska, British Columbia, Alberta and Wyoming
Habitat: Quiet waters of lakes, marshes or sloughs that are not subject to wave action
Wild Diet: Leaves and stems of pondweed and crowfoot, tubers of arrowhead and shoreline plants and seeds of water lilies and sedges
Zoo Diet: Waterfowl breeder pellets and generic grain
Trumpeters travel in small groups consisting of families and pairs. They are aggressive when claiming territory. Pairs claim nesting grounds far from other nesting pairs, choosing sites where food is available and where small bays can serve as a defense. More swans die from illegal shooting and lead poisoning than from any other cause. If their feeding grounds freeze over for long periods of time, starvation can lead to death.
Trumpeter swans mate for life, mating for the first time in their third year. They may use the same nest each year. The average nest is 3 feet wide (sometimes wider) and 3 feet high. Eggs are laid in April or May with the female doing most of the incubation. Cygnets bred in Alaska are able to fly in 84 days; those from Wyoming and Montana take 100-120 days to fly. Grayish cygnets hatch in June after 33 to 37 days, and weigh about 7 ounces at hatching. Cygnets forage on such animal life as aquatic insects and mollusks in the early weeks.
Gestation: Incubation: 33-40 days
Litter: 4-8 eggs
Conservation Status: Least Concern