Peregrines eat birds and other things that fly.
The falcon then retrieves the stunned or dead bird in mid-air. Peregrines are also swift fliers that can simply fly up behind their prey and grab it in mid-flight. An adult peregrine will eat about 70 grams of food per day. This is equal to about two blackbirds. After fledging, young falcons are dependent on the adult birds for up to four weeks.