Its flight is light, regular, and much protracted. It passes through the air at an elevation of thirty or forty feet, in perfect silence, and pounces on its prey like a Hawk, often waiting for a fair opportunity from the branch of a tree, on which it alights for the purpose. During day, they are never seen, unless accidentally disturbed, when they immediately try to hide themselves. I am not aware of their having any propensity to fish, as the Snowy Owl has, nor have I ever seen one pursuing a bird. Ever careful of themselves, they retreat to the hollows of trees and such holes as they find about old buildings. When kept in confinement, they feed freely on any kind of flesh, and will stand for hours in the same position, frequently resting on one leg, while the other is drawn close to the body. In this position I watched one on my drawing table for six hours.
This species is never found in the depth of the forests, but confines itself to the borders of the woods around large savannas or old abandoned fields overgrown with briars and rank grass, where its food, which consists principally of field-mice, moles, rats, and other small quadrupeds, is found in abundance, and where large beetles and bats fly in the morning and evening twilight. It seldom occurs at a great distance from the sea. I am not aware that it ever emits any cry or note, as other owls are wont to do; but it produces a hollow hissing sound continued for minutes at a time, which has always reminded me of that given out by an opossum when about to die by strangulation.
When on the ground, this Owl moves by sidelong leaps, with the body much inclined downwards. If wounded in the wing, it yet frequently escapes through the celerity of its motions. Its hearing is extremely acute, and as it marks your approach, instead of throwing itself into an attitude of defence, as Hawks are wont to do, it instantly swells out its plumage, extends its wings and tail, hisses, and clacks its mandibles with force and rapidity. If seized in the hand, it bites and scratches, inflicting deep wounds with its bill and claws.
It is by no means correct to say that this Owl, or indeed any other, always swallows its prey entire: some which I have kept in confinement, have been seen tearing a young hare in pieces with their bills in the manner of hawks; and mice, small rats, or bats, are the largest objects that I have seen them gobble up entire, and not always without difficulty. From having often observed their feet and legs covered with fresh earth, I am inclined to think that they may use them to scratch mice or moles out of their shallow burrows, a circumstance which connects them with the Burrowing Owls of our western plains, which like them have very long legs. In a room their flight is so noiseless that one is surprised to find them removed from one place to another without having heard the least sound. They disgorge their pellets with difficulty, although generally at a single effort, but I did not observe that this action was performed at any regular period. I have mentioned these circumstances, to induce you to examine more particularly the habits of the Barn Owls of Europe and the Southern States of America, that the question of their identity may be decided.
The pair which I have represented were given to me by my friend Richard Harlan, M.D., of Philadelphia. They had been brought from the south, and were fine adult birds in excellent plumage. I have placed a ground squirrel under the feet of one of them, as being an animal on which the species is likely to feed.
Strix flammea, Linn. Syst. Nat. vol. i. p. 133.—Lath. Index Ornith. vol. i. p. 60.—Ch. Bonaparte, Synops. of Birds of the United States, p. 38.
White or Barn Owl, Strix flammea, Wils. Amer. Ornith. vol. vi. p. 57. pl. 50. fig. 2.—Nuttall, Manual, part ii. p. 139.
Adult Male. Plate CLXXI. Fig. 1.
Bill short, compressed, deep, and strong, with a short cere at the base; upper mandible with its dorsal outline straight to the end of the cere, then curved, the sides nearly flat and perpendicular, the edges acute, the tip deflected, with a rounded but sharp-edged point; lower mandible, with the dorsal outline, convex, the sides convex, the edges arched and sharp, the extremity obliquely truncate. Nostrils large, oval, in the fore part of the cere. Head disproportionately large, as are the eyes and external ears. Neck also very short, body rather slender. Legs rather long; tarsus long, feathered, scaly at the lower part; toes large, the hind one short, the inner nearly as long as the middle one; the outer connected by a short web at the base; all covered above with series of small tuberculiform oblong scales, intermixed with a few bristles, and three broad scutella at the end; claws arched, long, rounded above, extremely sharp, that of the middle toe with an edge on the inner sides, which in old birds is transversely cracked.
Plumage very soft and downy, blended above, loose beneath. Long bristly feathers at the base of the bill stretching forwards. Eyes surrounded by circles of loose thin feathers; auricular feathers narrow, recurved and compact at the end, forming a ruff. Wings ample, long; second quill longest, third slightly shorter, first next in length; primaries incurvate towards the end, broad and rounded, the first, as usual in the genus, pectinated. Tail rather short, even, of twelve broad rounded feathers.