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FAMILY, TETR^CNID^]. THE GROUSE. 



The Tetraonidse are characterised among gallinaceous birds by their densely 

 feathered tarsi and 'by the feathers of the nasal groove which fill it and conceal 

 the nostrils. The toes are usually naked (feathered to the claws in the Ptarmi- 

 gans), and with pectinations of scales along the edges. The orbital region is 

 generally bare with a naked stripe above the upper eyelid ; some have an inflatable 

 air sac on the side of the neck. 



The species of Tetrao and Bonasa inhabit wooded regions ; Lagopus belongs to 

 the Arctic portions of the continent and generally become white in the winter. In 

 Ontario we have the following members of this family. 



Richardson's Dusky Grouse. 

 Spruce Partridge, Canada Grouse. 

 Ruffed Grouse. 

 Sharp tailed Grouse. 

 Willow Ptarmigan. 

 Rock Ptarmigan. 



