Bill as long as the head, moderately stout, conical, compressed, at the tip rather depressed; upper mandible with its dorsal line slightly arcuato-declinate, the ridge convex, the sides rounded, the edges sharp and overlapping, without notch, the tip flattened and obtuse; lower mandible with the angle short and rounded, the dorsal line straight, the sides convex, the edges sharpened a little involute, the tip flattened and rather obtuse. Nostrils basal, lateral, roundish, covered by bristly feathers, which are directed forwards. Head large, broadly ovate, neck rather short; body moderately stout. Tarsus rather short, compressed, with eight scutella; toes stout, the first very large, the inner a little shorter than the outer, which is adherent at the base. Claws large, arched, much compressed, acute. Plumage soft and blended; no distinct bristles at the base of the upper mandible, wings long, much rounded, the first quill very short, the fourth longest; tail of moderate length, rounded.
235. 1. Nucifraga Columbiana, Wils. Columbian Nutcracker.—Clark's Crow.
Plate CCCLXII. Fig. 4. Male. Fig. 5. Female.
Light brownish-grey; forehead, throat, fore part of cheeks, and space round the eye yellowish-white; wings glossy bluish-black, seven of the secondaries largely tipped with white; upper tail-coverts greyish-black; tail pure white, except the two middle feathers, and the greater part of the inner webs of the next pair, which are bluish-black.
Male, 12, wing 711/12.
Rocky Mountains.
Clarke's Crow, Corvus columbianus, Wils. Amer. Orn. v. iii. p. 29.
Corvus columbianus, Bonap. Syn. p. 57.
Columbian Crow, Nutt. Man. v. i. p. 218.
Clarke's Nutcracker, Nucifraga columbiana, Aud. Orn. Biog. v. iv. p. 459.
Bill short, or of moderate length, stout, broader than high at the base, compressed toward the end; the gape-line slightly arched, the ridge narrow, the notch and dentiform process large, the tip narrow and decurved. Head large, roundish, ovate; neck short; body compact. Legs of moderate length; tarsus compressed, with seven anterior scutella; toes moderate, compressed; hind toe rather stout, lateral about equal, the outer adherent at the base. Claws arched, compressed, acute. Plumage soft and blended. Bristles rather strong. Wings and tail various. Roof of upper mandible narrow, with a median ridge; tongue slender, concave above, horny toward the end, with the margins lacerated, and the tip slit; œsophagus wide, uniform; proventriculus elliptical; stomach broadly elliptical or roundish; its muscular coat thin, the epithelium dense and longitudinally rugous; intestine of moderate length; cœca very small; cloaca oblong or globular. Trachea simple; four pairs of inferior laryngeal muscles.