Catalogue of Canadian Birds. 61 



Asio accipitrinus. 



SHOKT-EARED OWL. 



Occurs throughout the entire Dominion. 



Syrnium nebulosum. 



BAKBED OWL. 



Occurs from the southern boundary to about the 50th parallel. 

 Is abundant in the Maritime Provinces, common thence to Mani- 

 toba, and rare on the Pacific slope. 



Ulula cinerea. 



GREAT GRAY OWL. 



Occurs in the Arctic regions, and occasionally in winter is 

 found along our southern border, from the Adantic coast to the 

 Cascades. 



Nyctala tengmalmi richardsoni. 



RICHARDSON'S OWL. 



A northern species, occurring usually in the Maritime Prov- 

 inces in winter only, though Mr. Cory reports it breeding on the 

 Magdalene Islands. Mr. Thompson gives it as a resident in 

 Manitoba. 



Nyctala acadica. 



SAW-WHET OWL. 



A common species throughout Canada to about the soth 

 parallel. 



Megascops asio. 



SCREECH OWL. 



Occurs from Lake Huron to the Atlantic, though rare in the 

 Maritime Provinces. Prof Macoun reports taking one example 

 at Birde. 



