The Horned Owls are the most widely distributed "true owls" in America. There are two species - the Greater and the Lesser - and numerous sub-species, occupying much of North and South America. Highly adaptable, she favours forested areas. She is one of the larger owls and her barred colouration offers her substantial camouflage, especially during the day as she sleeps. If crows can locate her daytime perches, they will mob her aggressively, endeavouring to chase her from their territory. At night, she calls several times before taking to the wing to hunt for small mammals such as cottontails and voles.