American Kestrels are apt and able hunters. They hunt large insects, bats, mice, birds and small reptiles. Kestrels usually hover before dropping on prey from above, pinning victims to the ground. They rarely chase prey, such as flying insects or bats, through the air.
Pair bonding among kestrels is strong and usually permanent. A pair is established after the male takes over a particular territory. Thereafter, a female will begin to hunt and associate herself with the male. The major components that will strengthen the bond between the two kestrels include courtship feeding of the female by the male, aerial displays and the search for a nest site. Kestrels nest in the spring from April to early June in woodpecker holes, natural cavities, niches in cliffs or buildings and in nest boxes that are specifically set up for them. The female is the main incubator of three to five whitish eggs that are heavily blotched with brown for approximately 30 days. During the nesting period, the male provides the family with food. Later, both will hunt as the nestlings mature and eventually leave the nest some 30 to 31 days after they hatch.