Moult is from June to August in the northern hemisphere. Breeding occurs at the age of 1 year. Nests are built on land. The young are precocial and are led to water on hatching by the female. Young can fly after 2 months when full-grown.
Promiscuity is common.
Steamer Ducks - these are a small group of ducks found only in South America and the Falklands. All but one of them are flightless. They are called Steamer Ducks because of their habit of moving rapidly across the water's surface flailing their wings. They can reach speeds of up to 28 kmh or 18 mph like this. They are excellent divers and feed mainly on shellfish.