BIRDS OF NORTH AND MIDDLE AMERICA 

 MICRASTUR SEMITORQUATUS NASO (Lesson) 



Central American Pied Forest Falcon 



567 



Adult, light phase (sexes alike).— Forehead, crown, occiput, nape, 

 scapulars, interscapulars, upper wing coverts, rcmiges, back, rump, 

 and upper tail coverts black, the wings and their coverts, rump, and 

 upper tail coverts inclining to fuscous-black, the top of head and 

 interscapulars the deepest black; a fairly broad white collar inter- 

 rupting the black on the hind neck, continuing lateroventrally to 



Figure 41. — Micrastur semitorquatus. 



join the white underparts; the upper taU coverts with a white band 

 which is sometimes broken into spots, and tipped with white; remiges 

 whitish on the inner portions of their inner webs, except for a broad 

 terminal fuscous-black area; the white part broadly barred with 

 fuscous-black which breaks up the white into isolated incomplete 

 bands not reaching the shaft except at the extreme basal part of the 

 feather; sixth primary (from outside) the longest, then the fifth, 

 seventh, fourth, third, eighth, ninth, the outermost one by far the 



