ORDER PYGOPODES. 



Diving Birds. 



Suborder PODICIPIDES. Grebes. 

 Family PODICIPID^. Grebes. 



Six species of Grebes occur in North America. Their toes tire lobe webbed and the legs 

 are placed far back, rendering wallciug difficult. Tliey feed principally on fish. About 

 thirty-two sjiecies are known throughout the world. 



Genus COLYMBUS Linn. 

 Subgenus COLYMBUS Linn. 



Holboell'e Grebe. 



Pied-billed Grebe. 



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