Generally 2 white eggs are laid. The female incubates the eggs alone, while the male supplies the food. The incubation period is 32-39 days, and young hatch within 7 days of each other. The second chick often does not survive. The female broods the chicks for up to about 20 days, and they leave the nest at 62-63 days after hatching, and are flying well about 2 weeks after that. They remain hidden in trees or bushes and are rather inactive until about 3 months old. At 5 months they are able to catch prey. Sometimes young remain with their parents for up to 2 years. Sexual maturity is reached at 3-4 years.