adult; back rounder than in Tundra Swan (Washington, USA; 2007-03-25)

Trumpeter Swan
Cygnus buccinator

Native Range: North America

Notes: a large swan best told from similar Tundra Swan by voice (a gentle honking rather than hooting or barking) and by the shape of the bill (longer and straighter); also prefers more wooded ponds and streams than does Tundra Swan; no sexual dimorphism.

long and straight black bill (Washington, USA; 2007-03-25)

getting airborne; note also the bill shape (Washington, USA; 2007-03-25)