BUTEO. 237 
lower parts white, sometimes streaked with brownish, the 
sides of chest without brown or rusty patch. Hab. Tropical 
America in general (except West Indies), north to eastern 
Mexico and Florida. 
344. B. brachyurus VIEILL. Short-tailed Hawk. 
@’, Middle toe shorter than naked portion of tarsus in front. (Sub- 
genus Buteo, part.) 
Only three outer quills with inner webs.emarginated. Adult : 
Tail blackish, crossed by 2-4 broad bands of light brownish 
gray or brownish white, and narrowly tipped with whitish ; 
upper parts nearly uniform dusky brownish, darker on 
back; beneath brownish (varying to dull rufous or rusty) 
anteriorly, usually more or legs broken by white transverse 
spotting ; posterior lower parts white, barred or transversely 
spotted with dull rufous. Young: Tail grayish brown, 
crossed by 5-7 narrow bands of dusky, and tipped with 
whitish; sides of head and entire lower parts dull white, 
or buffy, marked longitudinally with blackish or dusky, on 
breast, sides, etc., the cheeks with a rather distinct “ mus- 
*tache” of dusky streaks. Male: Length about 13.25-15.00, 
wing 9.85-10.70, tail 6.50-7.00, culmen .70, tarsus 2.15-2.80, 
middle toe 1.20-1.38. Female: Length about 16.00-18.00, 
wing 11.00-11.40, tail 7.00-8.00, culmen .70-.80, tarsus 
2,20-2.70. Nest in trees (often a deserted crow’s nest). 
Eggs 2-4, 1.93 x 1.56, buffy whitish, variously spotted and 
blotched with brown. Hab. Hastern North America, north 
to New Brunswick and the Saskatchewan, west to edge 
of Great Plains, south (in winter only?) through Middle 
America and West Indies to northern South America. 
343. B. latissimus (Wits.) Broad-winged Hawk. 
a’, Tail less than half as long as wing; tarsus about half as long as tail; primaries 
exceeding secondaries by nearly the length of the tail. (Subgenus Tachy- 
triorchis Kaup.") 
Only three outer quills with inner webs distinctly emarginated. Adult 
male: Above (except rump) plain bluish gray (varying to slaty or even 
dusky), the anterior lesser wing-coverts rufous, the longer scapulars 
much tinged with the same; tail white, crossed near end by a broad 
band of black, anterior to which are numerous narrow bars or lines of 
slate-gray or plumbeous, or dusky; rump and lower parts pure white, 
the throat sometimes dusky or grayish; flanks, rump, and under wing- 
coverts usually faintly barred with ashy, dusky, orrufous. Adult female: 
Similar to adult male, but rufous patch on lesser wing-coverts more 
1 Tachytriorchie Kaur, Class. Sug. u. Vig. 1844, 123. Type, Falco pterocles Tem. =F. albicaudatua 
VIEILL, 
