174 THE BIRDS OF MONTREAL. 



121. Great Horned Owl. 



Length of male, about 20 inches, extent about 

 50 inches, tail about 8 inches long. Female, about 

 25 inches long, extent about 56 inches, tail about 9 

 inches long. Adults : Plumage varied with buffy, 

 tawny, or whitish and dusky, part of throat and 

 middle of chest white. Ear-tufts very conspicuous. 

 Young : Plumage ochraceous, barred with dusky. 



122. Arctic Horned Owl. 



Above, whitish ; below, pure white, with dark 

 markings. 



123. Dusky Horned Owl. 



Extremely dark-coloured ; the face usually sooty- 

 brownish, mixed with grayish- white : the plumage 

 usually without excess of ochraceous or tawny 

 sometimes with none. (Ridgway.) 



124. Snowy Owl. 



Length of male, about 21 J inches, tail about 9 

 inches long. Female, about 26 inches long, tail 

 about 10 inches long. Ear-tufts rudimentary. 

 Adult male: Plumage pure white, some specimens 

 almost immaculate, but usually marked more or 

 less with spots or bars of slaty-brown. Adult 

 female: Plumage of ground-colour white; face, 

 fore-neck and middle of breast immaculate ; top of 



