80 Wyoming Experiment Station. 



"Mr. H. V. Henshaw says : 'Their food consists almost 

 exclusively of field mice, of which they kill vast numbers, a 

 fact which should earn them the protection of the farmer.' 

 (Report of the Chief of Engineers, U. S. A., p. 131 1.) 



"Mr. Townsend Glover says : 'The stomach of one speci- 

 men of the Long-eared Owl in the collection contained the 

 skulls and bones of at least 8 field mice and therefore, when 

 about barns and granaries, these birds must be very useful/ 

 (U. S. Agl. Rept., 1865, p. 37.) 



"Capt. Charles E. Bendire, writing from Camp Harney, 

 Oregon, states : 'Their food consists principally of mice and 

 the smaller rodents.' (Ornithologist and Oologist, Vol. VI, 

 1882, p. 82.) 



"Dr. B. H. Warren gives the following: 'I have ex- 

 amined the stomachs of twenty-three Long-eared Owls and 

 found that twenty-two of them had fed only on mice ; the oth- 

 er examination made of a specimen taken late in the spring 

 showed some beetles and portions of a small bird.' (Birds of 

 Pennsylvania, 1888, p. 107.)" 



Jesurun reports them common at Douglas ; Bond has 

 taken several specimens at Cheyenne ; Williston published 

 the following note on this species at Lake Como: "In sage 

 brush near lake May 5th. Common afterwards on Rock creek. 

 Nest Mav 31, two eggs, fresh. June 8, 5 eggs, fresh. June 

 10, 4 eggs, slightly incubated." Grinnell reports them from 

 Yellowstone park, 1875. Cary found a nest with young near 

 Newcastle June 3, 1900; Coues reports taking this species at 

 Powder and Popo Agie rivers. There are two skins in the 

 University collection that were taken on the Laramie plain. I 

 have taken this bird in every county in the state. 



367. Asio accipitrinus (Pall.). 

 Short-eared Owl. 

 Resident ; but rather uncommon. A valuable bird to any 

 community as the following will prove : 



