The tundra swan ( Cygnus columbianus ), formerly known as the "whistling swan," is a hardy migratory bird known for its impressive 6,000-kilometer journeys between Arctic breeding grounds and temperate wintering sites.
Distinguishing tundra swans from similar species like trumpeter and mute swans is key for birders and conservationists. The Elegant Tundra Swan: A Complete Guide tundra swan