GEOLOGICAL SURVEY OF THE TERRITOEIES. 

 (Sub-family Accipitrincc, the Haivlis.) 

 Accipiter fiisciis, Bonap., (sharp-shinned hawk :) 



697 



No. 



Catalogue- 

 number. 



Sex. 



Date. 



Measure- 

 ments. 



Locality. 



228 

 229 



62234 

 62235 



<? 



Aug. 20, 1872 

 Aug. 20, 1872 



12 X22i 

 13f X 26 



Lower Geyser Basiu, Wyo. 

 . Do. 



Sal). — Throughout i^Torth America and Mexico. 

 This species was only met with in the Lower Geyser Basin, where it 

 was quite common. 



(Sub-family Buteoninw, the Buzzard-haivJcs.) 

 Buteo sicainsoni, Bonap., (Swainson's hawk :) 



No. 



Catalogue- 

 number. 



Sex. 



Date. 



Measure- 

 ments. 



Locality. 



154 



61765 



5 



July 9, 



1872 



20i X 50+ 



Fort Hall, Idaho. 





155 



61766 



PuUus 



July 9, 



1872 



11 X21 



Do. 





238 



62226 



5 



Aug. 27, 



1872 



21+ X 52 



Lower Geyser Basiu, 



Wyo. 



239 



62227 



Juv. 



Aug. 27, 



1872 



20i X 49+ 



Do. 





251 



62228 



5 



Aug. 30, 



1872 



20f X 53i 



Do. 





269 



62229 



rf 



Sept. 15, 



1872 



201 X 49f 



Suake River, Wyo. 





313 



62230 



— 



July 3, 



1872 



19 x49 



Fort Ellis, Mont. 





Hob. — Western ]Srorth America ; accidental in New England. 



This species, though not at all numerous, was the most abundant 

 species of hawk along our route. On the 9th of July I obtained one of 

 their nests at Lincoln Valley, near Fort Hall, Idaho Territory. It was 

 found on a scrub-cedar on a side hill, about nine feet above the ground, 

 and was composed of sticks, lined with fine strips of inner bark; it was 

 nearly flat, and measured twenty-seven inches in external diameter by 

 ten in thickness ; it contained one young bird and one egg ; the egg — 

 which contained a full-grown embryo, which was dead and partly de- 

 composed — was white, and measured 2^ inches in length by If in 

 breadth. 



Buteo montanus, Nuttall, (western red-tail :) 



No. 



Catalogne- 

 number. 



Sex. 



Date. 



Measure- 

 ments. 



Locality. 



195 



62231 



5 



July 29, 1872 



23f X 54 



T6ton Cauon, Idaho. 



Hah. — Western North America. 



This western representative of B. horealis was only met with in T^ton 

 Canon, where I saw but one pair, the female of which I secured. 



