172 CHECK-LIST OF NORTH AMERICAN BIRDS. 



Mackenzie south to northern British Columbia, northern Alberta, and Magdalen 

 Islands; south in winter to southern Canada but rare eastward; casual 

 south to Oregon, Colorado, Nebraska, Illinois, Pennsylvania, and New England. 



Oryptoglaux acadica (Gmelin). 



Range. — Temperate North America. 



o. Cryptoglauz acadica acadica (Gmewn). Saw- whet Owl. [372.] 



Strix acadica Gmelin, Syst. Nat., I, i, 1788, 296. (Eastern North Amer- 

 ica.) 



Range. — North America. Breeds from central and eastern British Co- 

 lumbia, Alberta, Manitoba, Quebec, New Brunswick, and Nova Scotia south to 

 central Arizona, New Mexico, southern Nebraska, northern Indiana, Pennsyl- 

 vania, and Maryland; winters sovtth to southern California, Louisiana, Vir- 

 ginia (casually to the Carolinas), and Maine; casual or accidental in Mexico 

 and Guatemala. 



b. Cryptoglauz acadica scot&a (Osgood). Northwestern Saw-whet Owl. 



[372a.] 



Nyciala acadica scotoea Osgood, N. Amer. Fauna, No. 21, 1901, 43. 

 (Massett, Queen Charlotte Islands, B. C.) 



Range. — Queen Charlotte Islands and British Columbia, south to Puget 

 Sound region. 



Genus OTUS Pennant. 



Otus Pennant, Indian Zoology, 1769, 3. Type, by monotypy, Otus 

 bakkamcBna Pennant. 



Otus §.sio (LinnjEus). 



Range. — Temperate North America, from southern British Colum- 

 bia and the northern border of eastern United States south to north- 

 ern Mexico. 



a. Otus asio asio (Linn^us). Screech Owl. [373.] 



Strix asio Linnaeus, Syst. Nat., ed. 10, I, 1758, 92. (Carolina or Vir- 

 ginia.) 



Range. — Eastern North America from Minnesota, Ontario, and New 

 Brunswick south to northeastern Texas and Georgia, and west to about the 

 100th meridian; accidental in England. 



