Their diet consists of insects, invertebrates, and small rodents and birds. Some common species they eat are cicadas, dragonflies, beetles, mice, and small songbirds.
American Kestrels nest in pre-existing cavities - these can be naturally existing, human made, or old woodpecker holes.
They fight over cavity spaces with other cavity nesting birds, and sometimes successfully scare off bluebirds and take their home.
These birds hunt by day, scanning from their perch.
When mating, gifts of food are often exchanged.