Herbivore, plants such as sedges, true grasses, and knotweed.
In nature, up to 15-20 years. Up to 35 years in captivity.
Mating begins at approximately 3 years, from May to late June. Females lay on average 3 to 7 eggs, one egg per day, which she incubates for approximately 32 days. The cygnet’s first flight occurs between 60 and 75 days after birth.
Non-breeding adults have few predators. During nidification, eggs may fall prey to the common raven, long-tailed jaeger, grizzly bear, and arctic fox. Cygnets may fall prey to the red fox, wolf, and raccoon.