6 CONTENTS. 



Biographies of species — Continued, Page. 



Eicliardson's Owl {Nyctala tengmalmi richardsoni) 159 



Saw-wliet Owl {Nyctala acadica) 160 



Screech Owl {Megascops asio) 163 



Flammulated Screech Owl (Megascops flammeolus) 173 



Great Horned Owl (Buho virginiamis) 174 



Snowy Owl (Nyctea nyctea) 182 



Hawk Owl {Surnia ulula caparoch) 187 



Burrowing Owl (Speotyto cunicularia liypogivu) 189 



Pygmy Owl ( Glaucidiuvi gnoma) 196 



Ferruginous Pygmy Owl ( Glaueidium phalwnoides) 199 



Elf Owl {Micropallas ivhitneyi) 2C0 



