Tundra Swans pair for life, but if one dies, the other will find a new mate. Both male and female take turns caring for the young. Tundra Swans are peaceful birds, they fight only to defend their territory or to protect their nest and brood. If an attacking predator is killed, the swan will not eat it. Swans are vegetarians.
Swans feed on bulbous roots of water plants and wild celery.
They select their food by taste and touch -not sight.