When first born the chicks are helpless. One parent stays with the chicks while the other finds food for the brood. The youngsters eat an extraordinary amount of food. In about six days they weigh twice as much as when born and at three weeks will be ten times birth size. The immature birds start to fly about 40 days later.
Peregrine parents urge the young birds to fly bribing the young with something to eat.
Now the adults do not prepare the food and feed them directly. Sadly because of their newness to flight and hunting, numerous young birds will die before the next mating season because they make an error in judging their speed and collide with buildings. Some Peregrine Falcons lived as long as 13 years. A falcon named Arrow nested and bred in Edmonton's AGT Tower for 11 years. Peregrine Falcons that nest in the lower regions of The United States travel shorter distances when migrating if they leave at all.