The American Kestrel is a predator that feeds on insects such as grasshoppers, but also feeds on small rodents, reptiles, frogs, and small birds. It is often found perched on power lines, searching for food. When it spots its prey, the kestrel will fly above the victim before striking.
About 5 years in nature and up to 15 years in captivity.
The female lays 4 to 5 ochre-coloured eggs with brown splotching. The American Kestrel does not build nests, but will use abandoned crow nests, or nest in cavities found in walls, trees or rocks. The female incubates the eggs and will only leave the nest when it hears the call of the male bringing food. Hatchlings leave the nest after 29 to 31 days.
Eggs and young birds often fall prey to snakes and other animals that feed on eggs. Mature birds occasionally fall prey to Northern goshawk, sharp-shinned hawk or peregrine falcon.