Genus Buteo. Cuvier, Regne Animal, I., p. 323. (1817.) Buteo insignatus. Cassin, Birds of California and Texas, I., p. 102. (1854.)
Form. Short and robust; wing long; third quill longest, secondaries emarginate at their tips; quills wide; tail moderate or rather short, somewhat rounded; under coverts of the tail long; tarsi rather short, feathered in front below the joints, with the tibiæ naked behind, and having in front about ten transverse scales; claws rather long, moderately curved; bill short; upper mandible slightly festooned.
Dimensions. Adult male.—Total length of skin, 17 inches; wing, 14½; tail, 7½ inches.
Colors. Under coverts of the wing and tail white, the former striped longitudinally with pale ferruginous, each feather having a central dark line, and the latter transversely with reddish-brown; edges of wings at the shoulders nearly pure white; plumage of the tibiæ rufous, mixed with brown; throat and a few feathers of the forehead white, each feather having a line of dark brown, nearly black; entire other plumage above and below dark brown, nearly every feather having a darker or nearly black central line; quills above brown, with a slight purple lustre, beneath pale cinerous, with their shafts white, and with irregular and indistinct transverse bands of white; tail above dark brown, with an ashy or hoary tinge, and having about ten transverse bands of a darker shade of the same color; beneath nearly white, with conspicuous transverse bands of brown, the widest of which is subterminal; tip paler; bill dark; cere, tarsi, and feet yellow. Adult male.
Young. Entire upper plumage dark brown; on the back of the head and neck white at base, and edged with reddish; scapulars and greater coverts of the wing with large partially-concealed rufous spots; under parts reddish-white, every feather with a large terminal oblong spot of dark brown, and on the abdomen and tibiæ with numerous transverse bands of the same color; under tail coverts very pale reddish-white, with a few transverse spots and lines; inferior coverts of the wing pale reddish-white, with large brown spots.
Hab. Canada and California. Spec. in Nat. Mus., Washington city.
Obs. There is no other North American Buzzard with which there is any probability of the present bird being confounded by the student, on account of the peculiarity of its colors. In this character it bears a resemblance to some stages of plumage of Circus hudsonius, or to the European Circus æruginosus. It also is somewhat similar in colors, especially those of the young bird, to Buteo pennsylvanicus, but is much larger, and readily distinguished.
Plate 32
The Black-breasted Woodpecker
Melanerpes thyroideus (Cassin)