692 



BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



quite bright pinkish cinnamon, with blackish shaft stripes much 

 narrower than those of the breast and upper abdomen; under wing 

 coverts whitish somewhat washed wdth tawny, with narrow chaetura 

 drab shaft streaks and two or tliree broad deep chaetura drab trans- 

 verse bars, brealdng up the white into spots; eyehd greenish yellow 

 to deep yellow; cere greenish yellow; bill bluish, tinged ^vith greenish 

 at base, darker at tip; iris very dark brown; tarsi and toes wax yellow 

 to deep cadmium; claws black. 



ufc? 



Figure 50. — Falco {AesaloTi) columharius. 



Adult female. — Similar to the adult male, but top of head, occiput, 

 upper wing coverts, scapulars, interscapulars, and upper back heavily 

 washed with chaetura drab, which almost obliterates the slate color; 

 lower back, rump, and upper tail coverts more like that of the male, 

 only very slightly washed with chaetura drab; the pale bars or trans- 

 verse spots on the inner webs of the remiges washed with pinldsh 

 buff to very pale pinkish cinnamon, and generally larger than those 

 in the male; pale bands on the rectrices whitish more or less tinged 

 with pale pinkish buff on all but the median pair, those of the median 

 pair washed with pale neutral gray; the thighs less washed mth pink- 

 ish cinnamon, not sharply different in tone from the abdomen and 

 breast; sides of head averaging more heavil}^ washed with pinkish 

 buff than in males; eyelids and cere clear pale gamboge; iris and bill 

 as in male; tarsi and toes medium cadmium; claws black. 



