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CHECK LIST OF THE 



flap. Outer toe reversible; claws very sharp, long, and strong; inner 

 toe shorter than middle; middle claw not pectinate. All our species are 

 nocturnal except Nyctea and Surnia. 



GENUS ASIO. 



(366) American Long-eared Owl. 



(Asio wilsonianus.) 



A fairly common summer resident, breeding throughout its range 

 in the Pfovince, wherever there are woods. More frequently seen in the 

 autumn than at any other season. 



Feeds almost entirely upon meadow mice and large insects. I have 

 examined a great many of these birds and so far have never found any- 

 thing else in their stomachs ; never even the trace of a feather. 



Short-eared Owl. 



(367) Short=eared Owl. (Marsh Owl.) 



(Asio accipitrinus.) 



This Owl is sometimes very common in the autumn, about the low 

 meadows and marshes. In such places I have found them also during 

 the winter at times. Its movements seem to depend altogether upon the 

 food supply. When meadow mice are abundant and available the owls 

 will remain and feed upon them, but if the snow becomes deep so that 



