of Accipiter
The order that includes rapacious birds. They have a hooked bill, and sharp, strongly curved talons. There are three families, represented by the vultures, the falcons or hawks, and the owls.
Source: Webster's dictionaryHe placed all birds of prey into a single order, Accipitres, subdividing this into four genera: Vultur (vultures), Falco (eagles, hawks, falcons, etc.), Strix (owls), and Lanius (shrikes). Source: Internet