Bill of ordinary length, straight, robust, compressed; upper mandible with the dorsal outline straightish at the base, declinate and convex towards the tip, which is deflected, the sides convex, the edges rather sharp; lower mandible with the dorsal outline slightly concave towards the base, convex and ascending towards the tip. Nostrils basal, oval, partly concealed by short bristly feathers. Proportions of parts ordinary. Feet of ordinary length, rather strong; tarsus compressed, about the length of the middle toe, anteriorly scutellate, covered behind with two longitudinal plates, meeting at an acute angle; toes free, scutellate above; claws of ordinary size, arched, convex above, canaliculate beneath.
Plumage compact, glossy. Feathers of the head elongated into a crest, the posterior ones recurvate. Wings longish, the third and fourth quills longest, the first short. Tail very long, graduated, of twelve feathers, of which the two central are slightly curved, and greatly exceed the rest in length.
Bill and feet brownish-black. Iris hazel. The general colour of the plumage is bright blue, with purple reflections. The fore neck and anterior part of the breast black; the rest of the under parts white. The inner webs of the quills dusky, the four outer feathers of the tail white towards the tip.
Length 31 inches, extent of wings 26; bill along the ridge 1⅓, tarsus 2, middle toe 2.
THE LITTLE SCREECH OWL.
Strix Asio, Linn.
PLATE XCVII. Adult and Young.
This Owl, although found in the Southern States, is there very rare. During a long residence in Louisiana, I have not met with more than two individuals. On advancing towards the confluence of the Ohio and Mississippi, we find them becoming rather more numerous; above the Falls of the former, they increase in number; and as the traveller advances towards the sources of that noble river, their mournful notes are heard in every quarter during mild and serene nights. In Virginia, Maryland, and all the Eastern Districts, the bird is plentiful, particularly during the autumnal and winter months, and is there well known under the name of the Screech Owl.
You are presented, kind reader, with three figures of this species, the better to shew you the differences which exist between the young and the full-grown bird. The contrast of colouring in these different stages I have thought it necessary to exhibit, as the Red Owl of Wilson and other naturalists is merely the young of the bird called by the same authors the Mottled Owl, and which, in fact, is the adult of the species under consideration. The error committed by the author of the "American Ornithology," for many years misled all subsequent students of nature; and the specific identity of the two birds which he had described as distinct under the above names, was first publicly maintained by my friend Charles Lucian Bonaparte, although the fact was long before known to many individuals with whom I am acquainted, as well as to myself.
The flight of the Mottled Owl is smooth, rapid, protracted and noiseless. It rises at times above the top branches of the highest of our forest trees, whilst in pursuit of large beetles, and at other times sails low and swiftly over the fields, or through the woods, in search of small birds, field-mice, moles or wood-rats, from which it chiefly derives its subsistence. On alighting, which it does plumply, the Mottled Owl immediately bends its body, turns its head to look behind it, performs a curious nod, utters its notes, then shakes and plumes itself, and resumes its flight in search of prey. It now and then, while on wing, produces a clicking sound with its mandibles, but more frequently when perched near its mate or young. This I have thought is done by the bird to manifest its courage, and let the hearer know that it is not to be meddled with, although few birds of prey are more gentle when seized, as it will suffer a person to touch its feathers and caress it, without attempting to bite or strike with its talons, unless at rare intervals. I carried one of the young birds represented in the Plate, in my coat pocket, from Philadelphia to New York, travelling alternately by water and by land. It remained generally quiet, fed from the hand, and never attempted to escape. It was given me by my good friend Dr Richard Harlan, of Philadelphia, and was lost at sea, in the course of my last voyage to England.
The notes of this Owl are uttered in a tremulous, doleful manner, and somewhat resemble the chattering of the teeth of a person under the influence of extreme cold, although much louder. They are heard at a distance of several hundred yards, and by some people are thought to be of ominous import.