Breeding season is from July to December in southern parts of Australiia. Often breeds throughout the year after heavy rain. Breeding occurs in colonies with other species including Australian Ibis, egrets and spoonbills. Builds a large, rough platform on dense reed beds. Three to five dull, off-white eggs are laid. Both sexes incubate and feed the young. Incubation period lasts 20-25 days. Young fly at 30-40 days.