262 BIRDS OF ILLli^OlS. 



Colymbus cornutus Gmbl. S. N. 1, pt. ii, 1788, 591. 



Podiceps cornutus Lath. Ind. Orn. il. ma, 783.— Sw. & BioH. F. B.- A. ii, 1831, 411.— NtjM. 

 Man. ii, 1831, 254.— Aud. Orn. Biog. lii, 1835, 429, pi. 259; Synop. 1839, 357; B. Am. 

 vii, 1844, 316, pi. 481.— Lawb. in Baird's B. S, Am. 1858, 895.— Baibd, Cat. N. Am. B. 1859, 

 No. 706.— CouBS, Key,lS72, 337; Cheek List, 1873, No. 611; Birds N. W. 1874, 731. 

 Podieipes cornutus CouES, 2d Check List, 1882, No. 848. 

 Colymhui obscurus Gmel. S. N. i, pt. ii, 1788, 592. 



Colymhus caspicus S. G. Gmel. Eeise, iv, 1771-1784, 137.— Gmel. S.N. i, pt. ii, 1788, 593. 

 Podiceps hicornis Bkehm, Tog. Deutsohl: 1831, 96. pi. 44, flg. 4. 



Hab. Northern hemisphere in general. Breeds in the northern United States and 

 northward. 



Sp. Chab. Adult, hreeding -plumage: Head generally, inolading the fluffy tufts 

 on each side of the upper neck, slightly glossy dull greenish black, becoming grad- 

 ually dull sooty slate on the forehead; lores dull ochraoeous-rulous, communicating 

 with a, broad superciliary stripe of bright ochraooous, -which continues, gradually 

 widening, to the sides of tbe occiput; fore-neok rich rufoas. Upper parts dusky, the f fath- 

 ers sometimes with indistinctly paler margins; secondaries chiefly or entirely white. 

 Lower parts white, the sides mixed chestnut-rufous and grayish dusky. "Bill bluish 

 blaoK, its tip yellow; short loral space bright carmine, as Is the iris, its inner margin white; 

 edges of eyelids grayish blue ; feet dusky externally, internally, aud on anterior and pos- 

 terior ridges of the tarsus dull yellow; claws dusky" (Audubon).* Winter plumage: 

 Pileum, nape, and sides of the chest smoky slate; under part and sides of the head, 

 lores, and lower parts generally, white; chest faintly shaded with pale grayish, and 

 sides clouded with dark grayish. Upper parts as in the summer plumage, but more 

 slaty. "Bill bluish gray, as in the bare loral space; the eye bright carmine, with an 

 inner white edge ; the feet bluish gray" (Audubon). Downy young (half-grown): Fileum 

 and nape dusky ; sides of the head with two dusky stripes and several irregular spots of 

 the same color; throat with a dusky streak on each side. Otherwise similar in color to 

 the winter plumage. 



Total length, about 14.75 inches; extent, 25.50; wing, 5.75; culmen, 1.00; tarsus, 1.75. 



The Horned Grebe is said to breed iii northern Illinois, but 

 in other portions of the State is only a winter resident. 



Colymbus nigricoUis californicus (Heerm.) 



AMEBICAN EAB£D GBEBK 



Popular synonyms. California Grebe; Zambullidor de pico delgado (Mexico). 



Podiceps auritus Nuii. Man. ii, 1834, 256 (nee Colymbus auritus Linn.).— Aud. Orn. Biog. 



V, 1839, 103, pL 404; Synop. 1839, S58f B. Am. vii, 1844, 322, pi. 482.— Lawb. in Baird's B. 



N. Am. 1858, 897 (exol. syn.). 

 Podiceps californicus Hbeem. Proo. Aoad. Nat. Soi. Phila. 1854, 179; Paoiflo E. S. Bep. x, 



1869, 76, pi. 8 (young).— Lawb. in Baird's B. N. Am. 1858, 896.— Baibd, Cat. N. Am. B. 



1869, No. 707. 



"■An adult male killed at Washington, D. C April 21, 1885, had the unfeathered parls 

 colored somewhat differently, as follows : Bill black, with the tip and a considerable por« 

 tlon of the base of the lower mandible pale lilac-gray; line of bare skin running from rictus 

 to eye, pale lake-red; iris soarlet-lake,with a narrow ring of white next to pupil; outer side 

 of tarsus and under side of toes, black ; inner side of tarsus and upper surface of toe.i gray- 

 ish white, tinged with bluish, especially on toes, the innermost of which was tinged with 

 salmon-color. 



