Breeding season: July to December. Clutch size is 12. They form monogamous pairs and stay together outside the breeding season. Both parents choose and defend a nest site. The male stays with the female while she incubates the eggs. The nest is usually located over water in a down-lined tree hollow about 6-10 m high. Sometimes nests are placed on the ground, among clumps of grass near water, lined with down. Males do not assist with incubation but do look after the young when hatched. Once hatched, the young are ready to swim. Both parents protect their brood.