CHECK LIST 
OF THE 
BIRDS OF ONTARIO. 
The number in the margin opposite the species corresponds with 
the number on the label of each specimen of that species in the 
Biological Section of the Museum of the Department of Education. 
Species marked (*) are wanting to complete the collection. 
Order PYGOPODES. Diving Birds 
Suborder PODICIPEDES. (+trebes. 
Famity PODICIPID®. GRrREBEs. 
Genus COLYMBUS. 
SuBGENUS COLYMBUS. 
1. Holboell’s Grebe. 
(Colymbus holbeelli ) 
A regular but never a common spring and autumn visitor to the 
waters of southern Ontario. Probably breeds in the northern part of 
the Province. 
SusGEeNnus DYTES. 
2. Horned Grebe. 
(Colymbus auritus.) 
Abundant on the great lakes and all large bodies of water through- 
out the Province in spring and autumn, breeding in the large marshes. 
A few remain on Lake Ontario through the winter. 
GENUS PODILYMBUS. 
3. Pied-billed Grebe. 
(Podilymbus podiceps.) 
A common summer resident of marshes all over the Province, 
breeding throughout its range. Arrives early in April, departs about 
the middle of October. 
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