They have two wing bars and a dark bill with yellow at the base of the lower mandible.

The tail and wings are dark with white wing bars.

It has a black eye stripe and two white wing bars.

It is mostly white with black vines and wing bars.

Both sexes are distinguished by their large, deep bill and double wing bars.

A buff wing bar is obvious from below in flight.

They have white spots on their back and white wing bars.

The two white wing bars are always present in every stage of life.

The wing bar is in fact unique among living whistling ducks.

They have thin wing bars, dark legs and a broken white eye ring.