186 



No. 

 *160. 



161. 



162. 

 *163. 

 *164. 



*165. 

 ?166. 

 *167. 



Species. 



Falco lanarius L., 



var. POLYAGRUS Cass. 



Centre of abundance during breeding season. 



Rocky canons and open 

 plains. 



Falco columbarius LINN. 

 Falco Richardsonii RIDGW. 

 Falco sparverius L. 



Circus cyaneus (L.), 

 var. HUDSONIUS L. 



Nisus fuscus (GM.). 

 Nisus Cooperi (BONAP.). 



Nisus Cooperi (BONAP.), 

 var. MEXICANUS Swains. 



Astur palumbarius (L.), 

 var. ATRICAPILLUS Wils. 



168. 

 *169. Buteo Swainsoni BONAP. 



*170. Buteo borealis (GM.), 

 var. CALURUS Cass. 



*171. Archibuteo ferrugineus (LIGHT.). 



172. Archibuteo lagopus (BRUNN.), 

 var. SANCTI-JOHANNIS Gm. 



Aquila chrysaetus L., 

 var. CANADENSIS L. 



Haliaetus 



leucocephalus (BRISS.). 



Pandion haliaetus (L.), 

 var. CAROLINENSIS Gm. 



*173. 



174. 



175. 



*176. Cathartes aura (L.). 

 *177. ZensBdura Carolinensis (L). 



*178. Meleagris gallopavo L. 

 *179. Canace obscura (SAY). 



*180. Bonasa umbellus (L.), 



var. UMBELLOIDES Douglas. 



*181. Centrocercus 



urophasianus (BONAP.). 



*182. Pediocaetes phasianellus (L.), 

 var. COLUMBIANUS Ord. 



*183. Lagopus leucurus SWAINS. 



All timbered places. 



Marshos, chiefly in the 

 valleys. 



Lower wooded districts. 

 With N. fuscus. 



Everywhere ; breeds 

 chiefly among scattered 

 aspens in parks and 

 scrub oaks on foot-hills. 



Everywhere. 



Rocky portions of the 

 mountains. 



Vicinity of rivers and 

 lakes. 



With H. leucocephalus. 



Everywhere below the 

 pine region. 



Everywhere below the 

 pine region. 



Pine region and parks. 

 Pine region. 



Artemisia plains. 

 Rye grass meadows. 

 Alpine summits. 



