12 CHECK LIST OF THE 
SUBFAMILY FULIGULINA. Sra Ducks. 
Genus AYTHYA. 
42. Redhead. 
(Aythya americana.) 
A common summer resident, most abundant in southern Ontario 
in spring and autumn. 
They breed in the marshes of the north, and the bulk of them 
retire to the south when their haunts are frozen over, in some seasons 
a considerable number spend the winter on Lake Ontario. 
43. Canvas-back 
(Aythya vallisneria.) 
A regular but uncommon visitor to this Province, it breeds in the 
northwest and may perhaps sometimes do so in our northern marshes. 
SusGENusS FULIGULA. 
44, American Scaup Duck. 
(Aythya marila.) 
The great majority of these birds are spring and autumn visitor 
to southern Ontario but they do not go very far north to breed and a 
great many spend the winter along the shores of Lake Ontario. 
45. Lesser Scaup Duck. 
(Aythya affinis.) 
Common summer resident, breeding in the large marshes through- 
out the Province. 
It arrives as soon as the ice moves in the spring and remains until 
the marshes and bays freeze up. I have not observed it during the 
winter, 
46. Ring-necked Duck. 
(Aythya collaris.) 
Regular summer resident, less abundant than either of the pre- 
ceding species. 
Genus CLANGULA. 
47. Golden-eye Duck. 
(Clangula clangula americana.) 
Common winter visitor may perhaps breed in the Northern part 
of the Province, as it regularly does so in Southern Manitoba. 
