ORDER PYGOPODES. 



Diving Birds. 



Suborder PODICIPIDES. Grebes. 



Family PODICIPID^. Grebes. 



Six species of Grebes occur iu North America. Their toes are lolie webl)ea ami tlie legs 

 are placed far back, reuderiiig walking difficult. They feed principally ou fish. About 

 thirty-two species are known througliout the woi'ld. 



Genus COLYMBUS Linn. 

 Subgenus COLYMBUS Linn. 



L_L_, 



i-S^S^^l^: 



Holboell'B Grebe. 



Pied-billed Grebe. 



(131) 



