Dimensions. Female, total length of skin, 19½ inches; wing, 15; tail, 8 inches, and about an inch longer than the folded wings.
Colors. Female (Plate XLI., upper figure), entire upper parts dark brown, with a purplish bronzed lustre, especially on the wings; plumage of the head and neck behind, and some feathers on the back edged and tipped with yellowish white; upper tail-coverts yellowish white, with transverse bars of brown; tail above brownish cinereous, and having about ten narrow bands of brownish black, and tipped with white; under parts pale yellowish white or fawn color, with a few sagittate spots of brown on the sides, and a stripe of dark brown running downwards on each side from the corners of the mouth; cere, legs, and irides yellow.
Younger? (Plate XLI., lower figure.) Upper parts very dark brown or nearly black, with a purplish lustre; under parts with almost every feather having a large spot of brownish black, which color predominates on the breast, presenting a nearly uniform color with the upper parts; throat with narrow stripes of the same color; flanks and inferior wing-coverts with circular and oval spots of white; tibiæ dark brown, with transverse bars and circular and oval spots of reddish white; upper tail-coverts reddish white, with their outer edges brown, and with transverse stripes of the same; under tail-coverts yellowish white, with transverse stripes of brown; forehead white; cheeks yellowish white; stripes from the corners of the mouth wide and conspicuous. Sex unknown.
Hab. Wisconsin (Dr. Hoy, Rev. Mr. Barry, Mr. Dudley); Utah Territory (Lieut. Beckwith). Spec. in Nat. Mus., Washington, and Mus. Acad., Philadelphia.
Obs. This bird does not intimately resemble any other of the American Falconidæ at present known, and is a well marked species, especially in the plumage above described as probably the younger. In this the nearly uniform brownish black breast and large spots of the same color on the other under parts are strongly characteristic. The plumage of the first described above bears some resemblance to the young of Buteo lineatus, and also to the young of Buteo pennsylvanicus, but not sufficient to require especial consideration.
To us it is a point of high interest that the present bird bears the name of one with whom our relations have been intimate and of the most pleasant character almost since boyhood. One who is a most competent and efficient officer of the first Institution in America for the diffusion of knowledge—one who has gained a rank amongst the first American zoologists; and better, no man lives who is more conscientious in the discharge of his duties, more respectful of all that renders life agreeable, or more faithful in his friendships, than Spencer F. Baird, of the Smithsonian Institution.
TOXOSTOMA REDIVIVA.—(Gambel.)
The Curved-billed Thrush.
PLATE XLII. Adult Male.
The bird now before the reader is one of the most admired songsters of the western countries of North America. By competent judges, as we shall see in the course of the present article, he has been pronounced worthy of favorable mention, even when compared with our great sylvan vocalists, the Mocking Bird, and the Rufous Thrush, to both of which he can claim relationship, not distant.
Viewed as the representatives of principles embodied, as it were, in the various forms or rather classes of animal life, a consideration by no means to be overlooked in the present age of zoological science, birds are the especial exponents of the principles of the beautiful, and, of all classes of animals, appeal most directly to the higher faculties of the human mind. Entire symmetry and elegance of form, gracefulness of motion, agreeable and varied colors, and the fact that of the vast circle of animal life, they alone possess vocal powers which are musical, have recommended this class, and tended to perpetuate its high estimation in all civilized countries.
The flight of birds, never yet successfully imitated by the ingenuity of man (unlike in that respect the motions of fishes in their element), is a means of locomotion so entirely peculiar as always to have attracted attention, and, in past ages, wonder, even to such extent as to have assumed an aspect of superstition, not entirely ignorant nor reprehensible, because founded on facts of nature, manifesting itself in auguries and divinations, which commanded respect for centuries erroneously, but expanded into truth at last by the aid of the light of Inductive science. The conclusions of the learned and cultivated nations of antiquity, however apparently erroneous, are rarely without some foundation in and relation to truth, and in many cases are the origin of modern science. So the augurs were the first ornithologists, as the astrologers were the first astronomers.