BIRDS OF NORTH AND MIDDLE AMERICA 683 



narrowly and rather indistinctly barred with whitish, the more 

 posterior underparts plain deep buff or ochraceous. Young similar 

 but colors duller, the gray more brownish, the chest and breast striped 

 with duskj^ 



i?an^e.— Continental tropical and subtropical America, from 

 southern Texas, New Mexico, and Arizona to Argentina. (Mono- 

 typic.) 



FALCO FEMORALIS SEPTENTRIONAUS Todd 



Northern Aplomado Falcon 



Adult (sexes alike) . — White phase : A very narrow frontal line on 

 forehead whitish to cartridge buff; crown, occiput, and nape deep 

 neutral gray with a slight ashy bloom ; the nape crossed by a collar of 

 pinls:ish buff to very pale pinkish cinnamon; scapulars, interscapulars, 

 upper wing coverts, back, and rump neutral gray slightly washed with 

 drab, the interscapulars averaging somevv-hat darker than the back or 

 wings; primaries chaetura drab darkening to fuscous terminally, the 

 inner webs, except for an apical area about 35-50 mm. long, crossed by 

 10 to 13 white bars, these bars not quite reaching the edge of the 

 feather; the innermost three pau-s of primaries broadly tipped with 

 white and Vvdth the dark areas more grayish, less chaetura drab; 

 secondaries light neutral gray to neutral gray, broadly tipped with 

 white and mottled and barred with white on the inner webs; upper tail 

 coverts neutral gray barred with white and tipped with grajnsh white, 

 the white bars, four in number, narrower than the gray ones; rectrices 

 black with a plumbeous cast, crossed by eight narrow transverse 

 white bands, the basal two of which are concealed by the coverts, the 

 terminal one wider than the others (in some specimens the median 

 pair are suffused with light gull gray and crossed with 12 to 13 pale 

 bands which are wider than all the dark ones except the very broad 

 subterminal one); lores buffy white; a broad, conspicuous supraoral 

 stripe originating above the middle of the eye and running back above 

 the ear coverts to the occiput (vvdiere the two of opposite sides merge 

 with the nuchal collar) whitish to cartridge buffy becoming more 

 cinnamomeous posteriorly; a broad deep neutral gray stripe with a 

 slight plumbeous wash running from the posterior angle of the eye 

 back over the upper edge of am'iculars and extending broadly down the 

 side of the neck; another, but much smaller one, of similar color 

 starting at lower border of bare suborbital space, passing downward 

 across the cheeks, forming a "moustache," leaving the middle area of 

 the ear coverts, the chin, throat, and whole breast white, the breast 

 slightly suffused with light buff and defined posteriorly with a semi- 

 circular outline; broad area covering the sides of the breast, sides, 

 flanlvs, and meeting rather narrowly across the upper part of the 

 abdomen, chaetm-a black to black -with narrow, indistinct transverse 



