70 



Wnv^ 3 355-60, ? 390-405 mm. ; tarsus 

 feathered about half-way down in front ; 

 plumage above purplish brown, with ruf- 

 escent margins ; tail with 4 or 5 almost 

 obsolete darker bars ; below rufous, abdo- 

 men buffy- white, barred with rufous. 

 (Young : above with whitish edgings ; 

 below pale buff, finely streaked on breast 

 and blotched on abdomen with dark brown, 

 usually with a zone resembling that of 

 lagopus) . 



*tl35. Bitteo Sivainsoni Bonap. [ex. Aud. pi. 372] N. and S. 



Geogr. and Comp. List, p. 3 (1838). [Near America, from 



tJie Columbia River.] Alaska to Chile. 

 Swainson's Hawk. 



Wing (X. American average), o 371, $ 399 

 mm. ; wing (S. American average), ^ 378, 

 $ 412 mm. ; first 3 primaries notched ; 

 above dark-brown to slate-brown with 

 paler edgings ; tail with 10 or 12 darker 

 cross-bars, the sub-terminal broad ; throat 

 white, chest light rufous to deep chestnut 

 or brownish black ; lower parts buffy-white 

 more or less barred with rufous (sometimes 

 closely and entirely covered) ; uniform 

 sooty-brown or blackish varieties occur. 



136. Biiteo oreophiliis Hart, and Xeum., Orn, 

 M.B. xxii., p. 31 (1914). {Koritscha, Djam- 

 Djam, 5. Abyssinia.] 

 E. African Buzzard. 



Wing o 330, $ 340 mm. ; tail pale brown 

 with about 8 darker bars ; below whitish, 

 spotted and blotched lengthwise with dark 

 brown ; thighs bufiish, barred with dark 

 brown. 



Mountains of 

 E. Africa ; 

 Abyssinia and 

 Uganda to 

 the Cape. 



