GKEAT HORNED OWL. 235 



His visits to tlie fann-house are well understood, and if followed 

 by disaster, it is usually to the poultry, or to the bird himself, if the 

 farmer's boys can so arrange matters. He is of a most savage and 

 untamable nature, excelling any of the owls in strength and ferocity. 

 If brought to trial in Ontario, he would undoubtedly be condemned 

 to be killed off at once, on account of his depredations in the hen 

 roost and dove cot ; but we are told that in some parts of the west; 

 where rabbits are so numerous that it is next to impossible to bring 

 to maturity any large proportion of the crops, the Great Horned Owl 

 feeds on this destructive rodent, almost to the exclusion of other 

 food, and thus becomes a most valuable ally to the farmer. On this 

 account he has been placed in Class r, among those birds whose good 

 and evil deeds are about equal. 



On account of the variation in size and plumage, according to the 

 region they inhabit, the American Ornithologists' Union Committee 

 records three sub-species of the Great Horned Owl emanating from the 

 original Bubo virginianus. These Mr. Ridgway describes as follows : 



37oa. Bubo rirr/iniairux suharcficiis — Western Honied Owl. General aspect 

 of plumage : above, grayish, with more or less of huffy admixture, dark 

 markings of lower parts distinct. 



Hab. — Western United States (except north-west coast), eastward across 

 great plains, straggling to northern Illinois, Wisconsin and Western Canada, 

 north to Manitoba, south over table-lands of Mexico. 



37.56. Biiho riryiiiiaiiit.i arrtinix — Arctic Horned Owl. General aspect of 

 plumage : aljove, white through fading of the ground color and restriction of 

 dark markings ; beneath, pure wliite with dark markings, usually much 

 restricted. 



Hab. — Arctic Ameiica, chiefly in the interior, south in winter to northern 

 Rocky Mountains and Great Plains, Dakota, Montana, etc. 



375f. Bubo rirrjiniainis ■■<atura1ii« — Dusky Homed Owl. Extremely dark- 

 colored ; the face, usually sooty brownish, mixed with grayish-white ; the 

 plumage, iisually without excess of ochraceous or tawny, sometimes with none. 



Hab. — North-west coast from Oregon north to Alaska, Labrador. 



The common form in Southern Ontario is the original Buho virgin- 

 ianus, but I have also had one or two which answer the description 

 given of the western variety, and several apparently intermediate. 

 From Manitoba I have one as white as a female Snowy Owl, and from 

 the dense forests of British Columbia I have several which are very 

 dark. All of these varieties are smaller than the typical species, the 

 best developed specimens of which are found farther south. A full 

 plumaged female of Bubo virginiaiius is a very handsome bird, rich 

 in markings, and the strongest and fiercest of all the American owls, 

 a. perfect flying tiger when loose among the game or poultry. 



