BIRDS OF NORTH AND MIDDLE AMERICA 671 



spots or interrupted bars of slate-gray or white; chin, throat, sides 

 of neck and foreneck immaculate white, buff, or light ochraceous; 

 breast, upper abdomen, sides, flanlvs, under wing coverts, and axillars 

 black barred or spotted with white, buffy or tawny; lower abdomen, 

 thighs, and under tail coverts chestnut; inner webs of primaries with 

 transverse white spots. Young feathers of upperparts more or less 

 distinctly margined with rusty or brownish, instead of slate-gray 

 and (at least in F. deiroleucus) lower abdomen, thighs, and under tail 

 coverts, ochi-aceous or buffy with large transverse spots (more or less 

 cordate or crescentic) of blackish. 



Range. — Continental Tropical America. (Two species.) 



FALCO DEIROLEUCUS Temminck 



Temminck's Falcon 



Adult (sexes alike in color). — Entire top of head, nape, scapulars, 

 interscapulars, back, rump, upper wing and tail coverts blackish 

 plumbeous; the feathers margined with paler, dark plumbeous, the 

 margins narrower and somewhat tinged with brownish on the feathers 

 of the crown and occiput and, especially, the upper wing coverts, the 

 margins broadest on the scapulars, lower back, rump, and upper tail 

 coverts; upper tail coverts crossed by two grayish white bands on 

 their (usually) concealed basal two-thirds; remiges dull black, un- 

 marked on their outer webs, the inner webs with approximately 8 

 transverse spots of very pale ochraceous-buff, the spots touching 

 neither the shaft nor the edge of the feather, these spots becoming 

 smaller and disappearing on the inner secondaries; outer secondaries 

 with conspicuous white tips, the other remiges very narrowly tipped 

 with whitish, which quickly wears off; only the outermost primary 

 incised on its inner web; the second (from outside) the longest, then 

 the outermost, third, fourth, et cetera; rectrices dull black narrowly 

 tipped with white and crossed by five very narrow and very incom- 

 plete bands of dusky white, these bands consisting of transverse bars 

 which touch neither the shaft nor the edges of the feathers; lores, 

 cheeks, and auriculars black with a plumbeous sheen; chin and 

 middle of upper throat pure white; sides of throat, lower throat, and 

 breast bright ochraceous-tawny to pale cinnamon; upper abdomen, 

 sides, flanlvs, and under wing coverts black barred with ochraceous- 

 tawny and pale buff to warm buff'; the under wing coverts with no 

 ochi-aceous and with the pale marks almost white; lower abdomen 

 and thighs deep bright hazel ; under tail coverts black broadly tipped 

 and broadly banded (3 bands) with pale ochraceous-buff to pale 

 warm buff; iris dark brown; cere said to be pale yellowish; bill pale 

 yellowish becoming plumbeous terminally; tarsi and toes bright 

 yellow; claws black. 



