FAM. LXIV. GREBES 347 



washed with chestnut. Adult in winter, a common, slightly 

 crested, grayish-black-backed, silvery-white-bellied grebe, with 

 some grayish tints on throat and breast. This and the pied- 

 billed grebe (No. 6.) are in their winter 

 dress much alike in appearance, and are 

 often mistaken for each other. The 

 horned grebe's bill is straighter and 

 more slender than that of the pied-bill. 

 " When ordinarily swimming, the feet 

 struck out alternately, and the progres- 

 sion was steady ; but sometimes both feet struck together, and 

 then the movement was by great bounds, and was evidently 

 calculated to force the bird over an expanse of very weedy 

 water, or through any tangle of weeds or rushes in which it 

 might have found itself." (E. E. Thompson.) 



Length, \2\-\b\; wing, b\ (o|-5f); tarsus, If; culmen, |. North 

 America ; breeding from the northern range of 

 states northward, and wintering soutli to about 

 the Gulf of Mexico. 



4. American Eared Grebe (4. Cob'/mbus 

 nigricollis califdmicus). — Adult in summer, 

 — a western, black-headed, black-necked, 

 blackish-brown-backed, white-bellied grebe, with conspicuous 

 golden-brown ear tufts and a white blotch on the chocolate- 

 brown wangs, formed by the tips of the secondaries. The 

 winter coloring is much the same as that of the last, but the 

 difference of bill (wider than high at base), and the smaller 

 size distinguish the species. 



Length, 13; wing, 5^ (5-.5J); tarsus, If; culmen, |. Northern and 

 western North America (west of the Mississippi in the United States), 

 south to Central America. 



5. St. Domingo Grebe (5. Colymbus dominiciis). — An extreme 

 southern, very small, brownish-black-backed grebe, with dusky- 

 mottled, silky-Avhite belly. The crown is deep, glossy, steel- 

 blue, and the sides of head and the neck all around are ashy- 

 gray. There are no decided crests or ruffs. 



