456 ' BLACK HAWK. 
first primaries are white on their inner vanes; tail, rounded at the end, 
deep black, crossed with five narrow bands of pure white, and broadly 
tipped with dull white ; vent, black, spotted with white ; inside vanes of 
the primaries, snowy; claws, black, strong, and sharp; toes, remark- 
ably short. ms 
I strongly suspect this bird to be of the very same species with the 
next, though both were found to be males.' Although differing greatly 
in plumage, yet, in all their characteristic features, they. strikingly 
resemble each other. The Chocolate-colored Hawk of Pennant, and 
St. John’s Falcon of the same author, (.4rct. Zool. No. 93 and 94,) are 
doubtless varieties of this ; and, very probably, his Rough-legged Fal- 
con also. His figures, however, are bad, and ill calculated to exhibit 
the true form and appearance of the bird. 
This species is a native of North America alone. We have no 
account of its ever having been seen in any part of Europe; nor have 
We any account of its place or manner of breeding. 
BLACK HAWK. Youne.—Fic. 209. 
“Peale’s Museum, No. 405. 
BUTEO SANCTI JOHANNIS. Youna. — Bonararte. 
Falco (sub-genus Buteo) Sancti Johannis, young, Bonap. Synop. p. 32. 
Tus is probably a younger bird of the preceding species, being, 
though a male, somewhat less than its companion. Both were killed 
in the same meadow, at the same place and time. In form, features, 
and habitudes, it exactly agreed with the former. 
This bird measures twenty inches in length, and in extent. four 
feet; the eyes, bill, cere, toes, and claws, were as in the precedinc; 
head above, white, streaked with black and light brown; along the 
eyebrows, a black line; cheeks, streaked like the head; neck, streak- 
ed with black and reddish brown, on a pale yellowish white ground ; 
whole upper parts, brown black, dashed with brownish white and pale 
ferruginous ; tail, white for half its length, ending in brown, marked 
with one or two bars of dusky and a larger bar of black, and tipped 
with dull white ; wings, as in the preceding, their lining variegated with 
black, white, and ferruginous; throat and breast, brownish yellow, 
dashed with black; belly, beautifully variegated with spots of white, 
black, and pale ferruginous; femorals and feathered legs, the same, 
but rather darker; vent, plain brownish white. 
The original color of these birds in their young state may probably 
be pale brown, as the present individual seemed to be changing to a 
darker color on the neck and sides of the head. This change, from 
pale brown to black, is not greater than some of the genus are actu- 
ally known to undergo. One great advantage of examining living 
or newly-killed specimens is, that whatever may be the difference of 
color between any two, the eye, countenance, and form of the head, 
