Cygnus buccinator

Family: Anatidae

Trumpeter Swan (Cygnus buccinator) is the largest native waterfowl species in North America, found in wetlands, lakes, and slow-moving waters. Its long neck, all-white plumage, and large black bill give it a clean, unmistakable profile in open water. In Minnesota, it is a prominent and increasingly common presence in marshes and shallow lakes.

For representative images and visual context, see the page: Trumpeter Swan in the Gallery section.

Description

Cygnus buccinator is recognized by:

• Size: very large waterfowl, approximately 4.5–5.5 ft (140–165 cm) in length
• Plumage: white overall in adults; juveniles are gray-brown
• Bill: large, black, and wedge-shaped
• Neck: very long and typically held upright or gently curved
• Body: heavy and buoyant, with a broad, rounded form

The species presents a smooth, elongated silhouette, with the head and bill forming a continuous dark profile against the white body.

Habitat and Range

Typical habitats include:

• Freshwater marshes with emergent vegetation
• Lakes, ponds, and slow-moving rivers
• Wet meadows and shallow backwaters

Notes may include:

• Breeds in northern wetlands and protected marsh systems
• Increasingly common in Minnesota due to successful conservation and reintroduction efforts
• Often found in pairs or small family groups during the breeding season

Identification

Key features for field diagnosis:

• Size: exceptionally large, noticeably bigger than most waterfowl
• Color: white body with a solid black bill
• Neck: long and straight, contributing to a tall, elegant profile
• Shape: elongated and heavy-bodied
• Voice: deep, resonant, trumpet-like calls

Most similar to Tundra Swan, but Trumpeter Swan typically appears larger with a heavier bill and lacks the yellow spot often seen on Tundra Swan.

Behavior and Ecology

• Often observed singly, in pairs, or in small family groups
• Feeds primarily on aquatic vegetation, foraging in shallow water
• Requires open water for takeoff, often running across the surface before lifting into flight
• Forms strong pair bonds and nests in secluded wetland areas

Trumpeter Swans are closely tied to wetland ecosystems and are strong indicators of healthy aquatic habitats.

Notes

• The long neck and large black bill are key features, especially in side view
• Birds often stand out strongly against dark water or marsh vegetation
• In calm conditions, reflections can emphasize the species’ clean shape and posture
• A notable conservation success story in Minnesota, where populations have rebounded in recent decades

References

• Cornell Lab of Ornithology – All About Birds
  https://www.allaboutbirds.org

• Audubon Field Guide
  https://www.audubon.org

• Birds of the World / eBird
  https://ebird.org