(Falco peregrinus) is a widespread cosmopolitan predator. The female is considerably larger than the male and can reach the size of a raven. It has long pointed wings and short tail that tapers to an end. The color is most noticeable characteristic dark "beard" on the white face. The birds of prey are mainly in the size of the duck. Type the number of described subspecies, but not all are accepted. Different sources says 15 to 17, sometimes even 19 subspecies.

Wingspan peregrine is 85-115 cm, body length 35-50 cm. Males weigh from 500 g to 750 g, females are significantly larger and weigh 910-1500 g. The size is variable as well as color, depending on what subspecies it is. Northern species are more southern species are smaller.