BOSS ON MAMMALS, ETC. OF THE MACKENZIE RIVER DISTRICT. 277 



No. of Species. 



Genus Circus. 



10. Circtis hudsonicus (Lacej)). Marsli Harrier. North to Slave 



Lake : rather common. 



Genus Aquila. 



11. Aquila canadensis\\ (Linn.). Goklen Eagle. North to Arctic 



coast: rare. 



Genus Haliaetus. 

 tl2. Haliaetus leucocephalus\\ (Linn.). Bald Eagle. North to Arctic 

 coast : common. 



Genus Pandion. 

 tl3. Pandion carolinensis (Gmelin). Osprey. North to Arctic 

 coast : common. 



Family 8trigid(S. 

 Genus Bubo. 

 *14. Buho virginianus\\ (Swain.). Horned Owl. North to Arctic 

 Circle and beyond. 



Genus Otus. 

 *15. Otus Wilsonianus\\ (Lesson). Long-eared Owl. North to 

 Fort Simpson : rare. 



Genus Br achy otus. 

 *16. Brachyotus Cassi7iii\\ (Brewer). Short-eared Owl. North to 

 Eort Simpson: common. 



Genus Nyctale. 

 *tl7. Nyctale Bicliardsonii\\ (Bonap.). Sparrow Owl. North to 

 Eort Simpson : rather rare. 



Genus Nyclea. 

 *18. Nyctea nivea (Daudin). White Owl. North to Eort Nor- 

 man : rare. 



Genus Surnia. 

 *tl9. Surnia ulula\\ (Linn.). Hawk-Owl. North to Arctic coast: 

 common. 



II. — Order Scansores. 



Family Ficidce. 



Genus Pieus. 

 *20. Ficus villosus\\ (Linn.). Hairy Woodpecker. North to Eort 



Simpson : common. 

 *21 Ficus pubescens (Linn.). Downy Woodpecker. North to Eort 



Liards : not rare. 



Genus Picoides. 

 *22. Ficoides arcticus\\ (Swain.). Black-backed Woodpecker. North 



to Simpson : rare. 

 *23. Ficoides hirsutus\\ (Vieillot). Banded Woodpecker. North to 



Good Hope. 



