34 



STKIGIDjE. 



78. Bubo virginianus Bon. Great Horned Owl, 

 Occasional. 



79. Otus vulgaris var. Wilsonianus All. Long-eared OwL 

 Occasional. Two specimens obtained. 



80. Brachyotus palustris Bon. Short-eared Owl. 

 Apparently the most common of the Owls. Seen a few times far 



out on the prairies, many miles from timber. 



81. Syrnium nebulosum Gray. Barred Owl. 



Met with on the Missouri at Fort Bice, and on the Yellowstone 

 and Musselshell. 



82. Speotyto cunicularia var. hypogsea Coues. Burrow- 

 ing Owli 



Not numerous ; met with at intervals, in the prairie-dog towns, from- 

 the Little Missouri westward. 



FALCONIDJE. 



83. Circus cyaneus var. hudsonius All. Marsh Hawk. 

 Bare in the breeding season ; more common in August and Sep- 



tember. 



84. Accipiter Cooperi Bon. Cooper's Hawk. 



One was taken August 8th, near the mouth of the Little Porcu*- 

 pine, and a few others were seen later in the season. Bare. 



85. Falco communis var. anatum Bidg. Duck Hawk. 

 Seen but once or twice, near the Great Bend of the Musselshell. 



86. Falco COlumbarius Linn. Pigeon Hawk. 



Seen at distant intervals on the Yellowstone and Heart Bivers, is 

 September. 



87. Falco sparverius Linn. Sparrow Hawk. 



Very abundant along the timbered portion of the streams every- 

 where. Ten times more numerous than all the other Falconidce to- 

 gether. 



88. Buteo borealis Vieill. Bed-tailed Hawk. 

 Occasional along the more heavily timbered portions of the bottom- 

 lands. 



89. Buteo Swainsoni Bon. Swainson's Hawk. 



More or less common, doubtless, where there is timber. Obtained 

 an adult male on Heart Biver, June 25th. 



