BIRDS OF ONTARIO. 19 



Genus SOMATERIA. 



(i6o) American Eider. 



(Somateria dresseri.) 

 An occasional winter visitor. All the specimens of this duck taken 

 here were in immature plumage, so far as I have been able to learn. 

 Breeds on the North Atlantic coast. 



(162) King Eider. 



(Somateria spectabilis.) 

 Occurring more frequently than the last, but still only an occasional 

 winter visitor. Breeds on the North Atlantic coast. Adult specimens of 

 this duck in full plumage have several times been taken on our lakes in 

 late autumn and early spring. 



Genus OIDEMIA. 



(163) Black Scoter. (American Scoter.) 



(Oidemia americana.) 

 A regular winter visitor on the great lakes, sometimes moving 

 southward for a short time if the weather is very severe. Breeds in the 

 Arctic regions. 



(165) White=winged Scoter. 



(Oidemia deglandi.) 

 A common winter resident, frequenting the great lakes. Breeds 

 about the northern lakes from Labrador to British Columbia. 



(166) Surf Scoter. 



(Oidemia perspicillata.) 

 A regular visitor to our lakes in spring and autumn, probably some 

 remain through the winter, though I have never observed it here in the 

 coldest part of the season. 



Genus ERISMATURA. 



(167) Ruddy Duck. 



(Erismatura jamaicensis.) 



Common in spring and autumn. Breeds from our southern bound- 

 ary northward. 



Subfamily ANSERINE. (The Geese.) 



Genus CHEN. 



(*) (169a) Greater Snow Goose. (Wavey.) 

 (Chen hyperborea nivalis.) 



A rare visitor to the western part of this Province. Breeds in the 

 barren grounds along the .Arctic coast. 



