FIELD KEY TO: THE LAND BIRDS. 9 
8. RED-SHOULDERED HEN-HAWK. Bu- 
teo lineatus. — Length, 184 inches. Gray and brown 
above ; underparts white, covered thickly with rust- 
colored bars; bend of wing rich chestnut; tail black, 
with four or five narrow white bars. Males and 
females are alike, and the young are similar, but with 
the bars on their quills and tail tawny instead of 
white, and the underparts white with brown streaks, 
like No. lla on plate, with no reddish anywhere ex- 
cept on the shoulder. This hawk is not quite so 
strongly built as the Red-tail, but his habits are sim- 
ilar. His call sounds like key-you, key-you. 
9. BROAD-WINGED HAWK. — Buteo latissi- 
mus. — Length, 16 inches. Dark gray, brown above ; 
conspicuous dark cheek patches; underparts mostly 
tawny buff; tail black, with two narrow white bars. 
Males and females are alike; the young have the un- 
derparts white with brown streaks, and the tail with 
six to eight white bars. : 
The young of these three species of Buteo are simi- 
lar, but may be distinguished from each other by the 
following marks: the gray tail with narrow black 
bars of the Red-tail; the red shoulder and barred 
quills of the Red-shoulder ; and besides the smaller 
size, the dark cheek patches of the Broad-wing. 
Another distinguishing mark is: the Red-tail and 
Red-shoulder have the first four quills of their wings 
notched on the inner van, whereas the Broad-wing has 
only three quills notched. They all differ from the 
Accipiters by their tail markings, by being much more 
strongly built, and by having no round white spots on 
the feathers of the back between the shoulders. 
10. GOSHAWK. Aeeipiter  atricapillus. — 
Length, 22 inches. Ash gray, darker above; top of 
head, quills, and tail black ; a white line over the eye. 
Males and females are alike, but the young differ 
greatly from the old birds. The young of all three 
