The Stone Owls are extremely social, and live on very peaceable terms with their companions, dwelling in the same hole, and going together in search of prey. Twilight has scarcely set in before their voices are heard as they sweep about in pursuit of the small quadrupeds, birds, and insects upon which they subsist; the whole night is passed in pursuit of food, very much to the annoyance of many a weary sleeper, who is roused from pleasant dreams by the sudden dash of their bodies against the window as they vainly endeavour to get to the fire or taper burning within. During the breeding season they become extremely restless and noisy, and utter their strange cry throughout the whole day. The eggs, four to seven in number, are deposited about May in a hole in some old tree or building; the nestlings are hatched in a fortnight after the eggs are laid, and are reared upon mice, young birds, and insects. These Owls are frequently captured in Italy for the purpose of domestication, as they are easily tamed, and render themselves eminently useful in houses and gardens, by keeping the premises clear of mice and a variety of noxious insects. It is no uncommon thing to see three or four of them fastened to a perch in the stall of an Italian cobbler or tailor, who amuses himself by observing them as he plies his trade. These prisoners usually display great affection for their master, who rears them upon _polenta_ when meat is beyond his means. * * * * * The BURROWING OWLS (_Pholeoptynx_) are a family of very remarkable birds, about the same size as and closely allied to the Stone Owls, but differing from these latter in their superior length of leg, and in some other trifling respects. The members of this group are recognisable by their moderate size, round head, large eyes, and elongated beak, rather arched at its roof, and terminating in a hook; the lower mandible is blunt at its tip, and slightly incised upon the margins. The wings, in which the fourth quill is longer than the rest, are long, powerful, and rounded at the extremity; the tail is short and straight, the tarsi high, slender, and only sparsely feathered in front, the sides and sole being covered with smooth skin; the toes are defended by rough horny plates interspersed with bristles; the talons are very slightly curved. The plumage, which is composed of small, soft, silky feathers, lies very compact; the feathers on the cheek-stripes are stiff and bristle-like, and the rest of those upon the face small and delicate. THE BRAZILIAN OR RABBIT OWL.