Male and female Laysan Ducks do not look alike at all. The male is brown with a black face. They have deep orange feet, and the male also has a bluish green bill. They have black spots on upper mandible. Half of them have upturned tails.
Females tend to have more white on their body.
They also have a brownish yellow bill. Both sexes are about 15-17 tall. They have a bright purple speculum. They also both have a white patch around there eye. Laysan Ducks are most active at night.