The Nankeen Kestrel nests in a wide variety of sites, including tree hollows, caves, ledges on the outside of buildings, and occasionally on the ground. The nest consists of anything from a simple scrape in the dirt of a ledge or tree hollow, to a nest of sticks or mud that has been abandoned by another species of bird. Pairs of Nankeen Kestrels usually stay together over successive breeding seasons, and will often use the same nest site or territory year after year. Usually only one brood of young is raised in a year. The female does the bulk of the incubation, while the male supplies the food.