Proof of success are one or two eggs in a nest constructed of sticks up to four metres deep. The nest is hygienically lined with fresh leaves and is constantly maintained. The female, and male on occasion, incubate the eggs for approximately six weeks. A range of up to 3 km around the nest is defended by both parents. The hunting range can cover up to 150 km square.
Food is brought by the male for the young.
The first hatched chick usually survives the latter and at four months becomes independent. If this juvenile survives its first year, it will reach sexual maturity at five years and can look forward to a life span of up to 30 years.