Often he will turn his head upside down and call her. Copulation is frequent until the eggs are laid. The nesting place is used for many years, and is frequently old nests of ravens, buzzards and other nestbuilding birds of that size. Frequently the eggs are laid on the bare rock or ground. In the cities roofs of sky-scrabers are commonly used.
Peregrines are very aggressive to intruders, and fears no other birds but the gyrfalcon.
Even eagles are attacked if they happen to breed in the same area. Mainly birds of small races. Gamebirds, namely grouse and francolins, and pigeons, particularly the rock pigeon, are favourites where available. The prey is killed by the hit of the peregrine's large hind talon, or, if seized in the air, on the ground.