Why are Tundra Swans more prevalent in certain areas?

Tundra Swan Habitat Requirements

Tundra Swans are highly migratory birds that require specific habitats for their life cycles. They need wetlands, such as marshes, bays, and rivers, with shallow water and soft sediment, where they can forage for aquatic plants like grasses, sedges, and roots. In these areas, they can exploit the rich nutrients and energy sources necessary for their survival.

Breeding and Molting Preferences

During the breeding season, Tundra Swans prefer large, shallow lakes with surrounding wetlands, where they can establish breeding colonies and raise their young. These areas, often with vegetation like cattails and bulrushes, provide the swans with protection from predators and harsh weather conditions. Additionally, the swans require areas with shallow water, typically less than 6 inches deep, for molting, where they can safely shed their flight feathers and replenish them with new ones.

Migration Patterns and Food Availability

Tundra Swans migrate between their breeding grounds in the Arctic and their wintering grounds in the southern United States and Mexico, a journey of around 3,000 miles. During their migration, they stop at various wetlands along the way, where they can feed on available food sources, such as aquatic plants, grasses, and invertebrates. The swans’ reliance on these food sources can influence their migration patterns and habitat selection, as they seek out areas with abundant nutrition to sustain them during their long journeys.