• The bill of the swan goose is明显 longer than that of all other geese, distinguishing it from other members of its group.
• Male and female voices differ in pitch and duration.
• The characteristic two-toned neck pattern makes the neck look thin and long from a distance.

Goslings have small beaks for grazing on grass, yellow down that retains heat and conceals them from predators, and weak webbed feet; adult swan geese possess a large black beak with serrations for cutting plants, grey-brown feathers that aid in flight and warmth retention, strong orange webbed feet for walking and swimming, a long neck to reach plants from water and grass, and wide wings for long migrations.