CONTENTS 7 



Page 



Family Strigidae. Horned Owls -.183 



Genus Asio 183 



Asio wilsonianus. Long-eared Owl 183 



Asio flameus. Short-eared Owl 189 



Genus Strix 194 



Strix varia varia. Barred Owl 194 



Genus Scotiaptex 201 



Scotiaptex nebulosa nebulosa. Great Gray Owl 201 



Genus Cryptoglaux 203 



Cryptoglaux acadica acadica. Saw-whet Owl 203 



Genus Otus 208 



Otus asio asio. Screech Owl 208 



Genus Bubo 214 



Bubo virginianus virginianus. Great Horned Owl 214 



Genus Nyctea 223 



Nyctea nyctea. Snowy Owl 223 



Genus Surnia 223 



Surnia ulula caparoch. Hawk Owl 228 



Genus Speotyto 231 



Speotyto cunicularia hypogaea. Burrowing Owl 231 



