ORDER PYGOPODES. 



Diving Birds. 



Suborder PODICIPIDES. Grebes. 



Family PODICIPID^. Grebes. 



Six species of Grebes occur iu North America. Their toes are lobe webbed anil llie legs 

 are placed far hack, rendering walking dithcult. Tiiey feed principally on fish. About 

 thirty-two speeies ar*' known througliout the world. 



Genus COLYMBUS Linn. 

 SuwjENus COLYMBUS Linn. 



liolliKtll'.- (ircbc. 



ricillitUeil Urcbc. 



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