Scientific Name and Classification

Familia: Falconidae
Subfamilia: Falconinae
Tribus: Falconini
Genus: Falco
Species: Falco peregrinus
Subspecies: F. p. anatum – F. p. brookei – F. p. calidus – F. p. cassini – F. p. ernesti – F. p. fruitii – F. p. japonensis – F. p. macropus – F. p. madens – F. p. minor – F. p. nesiotes – F. p. pealei – F. p. peregrinator – F. p. peregrinus – F. p. radama – F. p. tundrius

he peregrine's breeding range includes land regions from the Arctic tundra to the tropics. It can be found nearly everywhere on Earth, except extreme polar regions, very high mountains, and most tropical rainforests; the only major ice-free landmass from which it is entirely absent is New Zealand. This makes it the world's most widespread raptor and one of the most widely found bird species. In fact, the only land-based bird species found over a larger geographic area is not always naturally occurring but one widely introduced by humans, the rock pigeon, which in turn now supports many peregrine populations as a prey species.

Both the English and scientific names of this species mean "wandering falcon", referring to the migratory habits of many northern populations. Experts recognize 17 to 19 subspecies which vary in appearance and range; there is disagreement over whether the distinctive Barbary falcon is represented by two subspecies of Falco peregrinus, or is a separate species, F. pelegrinoides. The two species' divergence is relatively recent, during the time of the last ice age, therefore the genetic differential between them (and also the difference in their appearance) is relatively small. It has been determined that they are only approximately 0.6–0.8% genetically differentiated.