Large and powerful falcon; slightly smaller and more slender than Saker Falcon. Several subspecies breed in the region. Adults are grayer above than Saker and have a paler cap. Juveniles are extremely similar to Saker and Peregrine Falcons. Compared to Saker juvenile Lanner Falcons have unstreaked trousers. Compared to Peregrine, juvenile Lanners are more heavily streaked on the underwings and underparts. Often hunts pigeons in canyons. Breeds on high mountainous cliffs in desert, semi-desert, and Mediterranean climates. In winter often descends to plains and steppes. Call is a typical falcon scream.