346 



KEY AND DESCRIPTION 



Holboell' 



Length, 24-29; wing, 8 (TJ-SJ); tarsus, 3; culmen, 2-|-3|-. Western 

 North America east to Manitoba, and south to central Mexico. 



2. Holboell's Grebe (2. Colymbus holh&llii). — Adult in winter, 

 a common, blackish-brown-backed, whitish-bellied grebe, with 



some pale brownish- 

 red on the sides of 

 the neck. Young, a 

 blackish-backed, sil- 

 very - bellied grebe, 

 with the neck and 

 sides grayish. Adult 

 in summer, a black- 

 ish-backed, chocolate- 

 brown-sided, white- 

 bellied grebe, with 

 the crown, small 

 crest, and back of the 

 neck black. There is 

 a silvery-ash patch on the throat, changing to deep, brownish- 

 red on the front and sides of neck to the breast. On the water 

 this is a very graceful bird, swimming and diving with the 

 greatest ease. When fly- 

 ing, and it flies rapidly, the 

 neck and feet are stretched 

 to their full length. (Red- 

 necked Grebe.) 



Length, 19 ; wing, 7| 

 8J) ; tarsus, 2|- ; culmen 

 2|. North America ; breeding 

 from about the northern border of the states northward, and wintering 

 south to about the Gulf, at least casually. 



3. Homed Grebe (3. Colymbus aurltus). — Adult in summer, 

 — a very much crested and ruffed grebe, with the top of head, 

 hind neck, and throat black ; stripe and plumes behind the eye 

 chestnut, blackening on the sides ; front of neck to breast 

 chestnut; back and wings blackish; belly white, and sides 



