ZOOLOGY. 
149 
Young much more brown ; a wide brownish black band on abdomen ; other under parts yellowish, with a few brownish lines 
and spots. Tail white, with a light brown hand near tip. 
A large hawk, with legs densely feathered to the toes, and which cannot be easily confounded with any other American 
species. It is distinguished from the young of the black hawk (A. Sancti Johannis) by its smaller size and fewer dark spots 
on the under parts.— Cassin. 
No. 8549. Shoalwater bay, October 31, 1854, (109.) Length, 21; extent, 52 inches. Iris, pale brown ; bill, slate colored 
and yellow ; feet, yellow. 
In October, 1854, I found a large number of the rough-legged buzzard on a low point near 
the sea-coast, covered with small pines, where they were sitting like"owls on tbe dead tree tops, 
occasionally darting down after a mouse, and alighting a short distance off. Sometimes they 
called to each other with a loud scream, but usually sat for hours motionless and silent. They 
varied considerably in the amount and distribution of the white feathers, but the specimen shot 
seemed to be one of the most perfect. One only was of a general dark chocolate color. Some 
remained all winter, and I think a few build near the mouth of the Columbia, where I saw 
young birds in July, 1855.—C. 
Specimen 6853, (581,) killed at Fort Steilacoom October 20, 1856, measures : length, 21^ ; 
extent, 52^ j wing, 16J inches. Cere and tarsus, yellow ; bill, black ; iris, grayish yellow.—S. 
ARCHIBUTEO FERRUGINEUS, Gray. 
Squirrel Ilaivk. 
Buteoferrugineus, Licet. Trans. Acad. Berlin, 1838, p. 428. 
Archibuteo ferruginous, Gray, Gen., p. 3. 
A. regalis, Gray, Gen. I, pi. 6, (plate only.) 
A. ferrvgineus, (Licht.,) Baird & Cassin, Gen. Rep. Birds, p. 34. 
Buieo calijornicm, Hutchin’s Cal. Magazine, 1857. 
Figured in Birds of Cal. and Texas, I, pi. 26. 
Sp. Ch, —Above entirely dark brown, and light rufous ; tail reddish white, mottled with ashy brown; pale beneath. Under 
parts white, with narrow brown streaks and spots on breast, transverse and mixed with black on abdomen ; flank and axillee 
bright ferruginous. 
Female: length, 23 to 25 ; wing, 17 to 17J ; tail, 9 Inches. 
Male, smaller. Young: paler, upper tail coverts white, spotted with brown; fewer streaks below ; under wing coverts and 
edges of wing white. —C. 
I shot an adult specimen (female) in December, 1854, in the vicinity of Fort Dalles, O. T. 
It seemed old and feeble, and, either from weakness or apathy, allowed me to approach very 
closely to its resting place. Its plumage was worn, ragged looking, and appeared as if it had 
not been changed at the previous moulting season. The tail only of this bird I preserved, as 
I had a press of material on hand, and much other business to attend to. On showing it to 
Mr. John Cassin, he pronounced it to belong to this species.—S. 
Sub-family MILYINAE.—The Kites. 
ELANUS LEUCURUS, Bonaparte. 
Tile White-tailed. Hawk; the Black-shouldered Hawk. 
Milvus leucurus, Yieill., Nouv. Diet. XX, 563, (1818.) 
Blanus leucurus, Vieill., Baird and Cassin, Gen. Rep. Birds, p. 37. 
Manus leucurus, Bonap. , Eur. & Am. Birds. 
Falco dispar, Temminck, PI. Col. I, liv. 54, about 1824. 
“Falco mdanopterus, Daudin.” Bonap. Jour. Acad. Phil. Y, 28. 
“Falco dispar, Temm.” Aud. Org. Biog. IY, 367. 
