MIGRANTS AND WINTER RESIDENTS. 



177 



Horned Grebe: Colymbus auritus. 



Large black ruff around the head, two brownish yellow 

 plumes above the eyes; back and wings blackish; neck, 

 upper breast and sides chestnut; belly white. Length 14 

 inches. In winter, all under parts silvery-white. October 

 to May. Common. 



Pied-billed Grebe; Dipper: Podilymbus podiceps. 



Upper parts blackish-brown; throat black; upper breast 

 ana sides mottled; under parts white; black band across 

 the bill. In summer, throat white and no black band on 

 bill. Length 14 inches. August 25 to May. Common, but 

 less so in midwinter. 



