In Argentina breeding is reported from September into March, a broad span that perhaps the rearing of two broods (Gallardo 1984), although Bohl (1970) found that the greatest number of nests hatched young from late November into January.
Nest and nest building
Nests are a shallow bowl, placed under low bushes, grass clumps or weeds, or at the base of a tree. The bowl is dug with the feet, as the bird turns the body and kicks dirt out; additionally, a few feathers, twigs or other dry material often are pulled into the nest, by both males and females (Bohl 1970).
Clutch size and eggs
The eggs are apple green color, glossy, and unmarked. Mean egg dimensions are 53.4 x 38.0 mm, with a mass of 32 to 52 g (Bohl 1970). In captivitiy a single female may lay 30 to 40 eggs during a season. Per nest, clutch size varies from five to 16 eggs; nests with more than 6 eggs per clutch may contain eggs from two or more females. Eggs are laid usually in the early morning (Bohl 1970, Gallardo 1984).
Incubation begins after five or six eggs are laid. Only the male incubates. When he is not on the nest, he covers the eggs lightly with feathers, twigs or leaves. brood patch appears during incubation and the male continually carries or pulls feathers, twigs, or leaves to the nest edge, covering the eggs lightly when he is off for feeding. Incubation takes 20-21 days (Bohl 1970).
Renesting may occur if the first clutch is lost (Bohl 1970).
Only the male provides partental care. The young leave the nest shortly after hatching, but remain with the male for a considerable period of time, becoming independent by three to four months of age (Bohl 1970).