Hawks 



341. Sennett White-tailed Hawk {Bulso alhicoMda- 

 ius sennttti') . L. cTi 21; ¥,23. Three outer primaries 

 cut. Adi. Grayish slate above, Yyig. Above 

 brownisli black; breast usually wliite, tbroat blackish, 

 belly lieavily marked with rusty and blackish; some- 

 times wholly black below; tail generally sii-usry gray, 

 white on inner webs with numerous indistinct blackish 

 bars. Natis. A cry much like the bleating of a goat 

 (Merrill.) 



Range — From souttierr. Texas and Arizona south to Mexico." 

 (Bailey.) 



347a. Amprican liough-fegged Hawk {Archihutfo 

 lagopMs samrti-jokannis) . B. .7 deep, smalhr than in 

 No. 348. L. cTi^i; 2, 23. Legs feathered to the 

 toes. Ads. Basal half of tail white, end half barred 

 with black; belly with more or less black. Yng. No 

 black bars on end half of tail; buffier below, more 

 black or belly. Black phase. Black more or less 

 varied with brown and rusty as it approaches light 

 plumage of ad. or yng; but to be known by feathered 

 legs. 



Range. — Nortli Amerifa; hrperts north of United Staleb.; winters 

 south to Virginia, Mi.ssnitrl and r.pntrai California. 



348. Ferruginous Rough-Leg [Archibuteo forntgi- 

 ueus). E. I. deep, larger than in No. 3473; L. <^, 22, 

 9,24. Legs feathered to toes. Ads. Above rich 

 rusty streaked with black; legs rusty barred with 

 black; tail grayish sometimes washed with rusty. 

 Yng, Above blackish brown niargined with rusty; 

 below white; breast with a tew streaks; legs spotud; 

 tail with inner webs and base white; outer webs grayish. 

 Dark phase. Sooty brown more or less varied with 

 rusty; tail as in ad. 



Rang^.— Western North America from the Plains feast North Da- 

 kota to Texas) . west to (he Pacifir. and from thp Saskattliewan region 

 south into Mexico; casually east 10 Illinois. Breeds from Utah. Coio- 

 radg and Kansas north to the Saskatchewan Plains." (A. O. U.) 



355. Prairie Falcon {Falco mexicanus), L. cT, 

 17; ?,zo. A blackish patch on the sides. Ad. ^. 

 Above including middle tail feathers, grayish brown; 

 back with more or less concealed buffy bars. ^d. $. 

 No buffy bars on back. Yng. Above margined with 

 rusty and whitish; head mucri as in ad, Nohs. K^e\ 

 k^e, kes and a sort of cackle. (Bendire.) 



Range.— "United Slates from the eastern border of the Plains to the 

 Pacific and from the Dakoti r south into Mexico; casual east to Illi- 

 nois. Breeds throughout Its United States range." (A. O. U.) 



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