 The Malagasy kestrel usually nests on rock ledges, in buildings, in tree holes, or in the stick nests of other birds, such as the pied crow.Four to six eggs are laid, usually in September, and are incubated by the female only, who is fed by the male at regular intervals during incubation.Insects take up the majority of the Malagasy kestrel's diet, which are usually taken during flight, but it also occasionally eats small birds, frogs, and mammals, all of which are taken on the ground.