Shruby steppes with grasses
They nest in the middle of shrubs, the male makes the nest in which each female of his harem lays 2 to 3 eggs, at times totalling 10 to 40 eggs that he incubates.
There is no sexual dimorphism. Usually they are seen in groups of 5 to 15 individuals. During the period of reproduction it is possible for one male to watch over 30 to 40 chicks named "Charitas", that are sometimes of different ages. It is not uncommon for a male Ñandu to adopt an orphan chick and care for it as his own.