80 
FALCO NIGER. 
spotted with white ; inside vanes of the primaries, 
snowy ; claws, black, strong and sharp ; toes, remark- 
ably short. 
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 resem- 
ble each other. The chocolate coloured hawk of 
Pennant, and St John’s falcon, of the same author,* 
are doubtless varieties of this ; and, very probably, his 
rough-legged falcon 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. 
19. BLACK HAWK. 
WILSON, PLATE LIII. FIG. II. — YOUNG BIRD. 
This 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 habi- 
tudes, 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 preceding ; head above, white, streaked 
with black and light brown ; along the eyebrows a black 
line ; cheeks, streaked like the head; neck, streaked 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 
Arctic Zoology , Nos. 93 and 94. 
