238 



AMERICAN ORNITHOLOGY. 



Identification Chart No. 7. 



Diving Birds— Grebes. 



No. 2, Holboell's Grebe, {Colymhiis holhoelUi.') 



Length, 19 in. Crown, back of neck, and upper 

 parts black with a greenish gloss. Secondaries white, 

 forming a conspicuous white patch on the wing. A 

 broad patch of silvery ash on the throat extending on 

 the sides of the head and changing to white as it meets 

 the black of the head. Front and sides of neck brown- 

 ish red spreading well on the breast in a fainter shade. 

 Under parts silvery white. Found throughout North 

 America. Young birds and winter adults have the en- 

 tire under parts, including the neck and throat, white, 

 and the crests are entirely lacking. 



No. 3, Horned Grebe, {Colvmlms aiiritus.) 



Bill tipped with yellow. A brownish yellow stripe 

 over the eye and widening so as to take in the whole 

 of the long crests. Crown, chin and the sides of the 

 face, the feathers of which stand out making a full ruff, 

 are a glossy, greenish black. Entire upper parts a 

 brownish ( lack. Front and sides of neck rich brown- 

 ish red, this extending on the sides and flanks. In 

 winter the crests are very small and the neck is a dull 

 white. Length about 14 in. Entire North America. 



No. 4, Am. Eared Grebe, 

 fornicus.) 



Length, 13 in. Bill short, stout and black. Long 

 golden brown ear tufts. Head and neck all around 

 black. Other upper parts brownish. Sides reddish 

 brown, this extending across the breast. Under parts 

 white. No ear tufts in winter and the neck is sooty 

 brown. North America west of the Mississippi. 



No. 5, St. Domingo Grebe, (Colymbus domin- 



icus.) 



Length, 9.5 in. Bill very short. Upp^r parts 

 brownish black with blue reflections on the head and 

 neck. Entire under parts white mottled. 



No. 6, Pied-billed Grebe, (^Podilymbus podi- 

 ceps.) 



Length, 13 in. Bill bluish white encircled by a 

 broad black band. Entire upper parts brownish or 

 grayish black, most of the feathers having lighter 

 edges. A broad black patch on the throat. Other 

 under parts silvery gray mottled with dusky. In win- 

 ter the bill lacks the black band and the throat is uni- 

 form with the other under parts. Throughout the 

 United States and Southern Canada. 



(C. nigricollis cali- 



