150 THE BIRDS OF MONTREAL. 



47. Surf Scoter. 



Length about 22 inches. Bill about 1J inches 

 long. Adul< male : Above, deep black, below, more 

 sooty, white patch on forehead and on hind-neck, 

 bill reddish, marked with large spot of jet-black. 

 Female: Upper parts dusky, lower parts grayish- 

 brown, bill dusky, length about 19 inches. Young : 

 Similar to female, but side of head with two whitish 

 patches. 



48. Ruddy Duck. 



Length about 16 inches. Bill about 1J inches 

 long. Adult male : Above, bright reddish-chest- 

 nut, top of head black, side of head, below eyes, 

 white, lower parts whitish. Adult female and 

 Young m.ale : Above, grayish-brown, finely mottled, 

 lower parts whitish. 



49. Greater Snow Goose. 



Length about 38 inches. Bill about 2J inches 

 long. Adult : White, head often stained with rusty, 

 primary wing-feathers black. Young : Grayish above 

 and white below. 



50. American White-fronted Goose. 



Length about 30 inches. Bill about 2J inches 

 long. Head white and grayish-brown, neck and 

 upper parts grayish-brown, tail-coverts white, lower 



