5562 BIRDS OF ILLINOIS. 



Colymbus cornutu.ii GMBL. S. N. i, pt. ii, 1788, 591. 



Podiceps cornutus LATH. Ind. Orn. iu 179J, 783. Sw. & RICH. F. B.- A. 11, 1831. 411. NtTTT 

 Man. ii. 1834. 234. AUD. Orn. Biog. iii, 1835. 429, pL 259; Synop. 1839. 357; B. Am. 

 vii. 1844. 316. pL 481.-LAWB. in Baird's B. X. Am. 1858. 895.-BAIBD. Cat. N. Am. B. 185&. 

 No. 706. COUES. Key, 1872, 337; Check List, 1873, No. 611; Birds N. W. 1874. 731. 



Podlcipes cornutus COUES, 2d Check List. 18S2. No. 848. 

 Colymbu* obscurus GMEL. S. N. i, pt. ii, 1788. 592. 



Colymbus catpicus 8. G. GMEL. Reise. iv. 1771-1784. .137. GMEL. 8. N. 1. pt. ii, 1788.593. 

 Podiceps bicornis BBEHM. Vog. Deutschl. 1831, 96. pi. 44. fig. 4.- 



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

 northward. 



SP. CHAB. Adult, breeding-plumage: Head generally, including the fluffy tufta 

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

 ually dull sooty slate on the forehead: lores dull ochraceous-ru:ous, communicating 

 with a broad superciliary stripo of bright ocbraceous. which continues, gradually 

 widening, to tho sides of tUe occiput; fore-tteck rich rufous. Upper parts dusky, the f .-ath- 

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

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

 blaca, its tip yellow: short loral space bright carmine, as is the iri?. its inner margin white; 

 edges of eyelids grayish blue; feet dusky externally, internally, a'hd on anterior and pos 

 terior ridges of the tarsus dull yellow; claws dusky" (/VUDUBON).* Winter plumaga: 

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

 lores, and lower parts generally, white; chest faintly shaded witb pole grayish, and 

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

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

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

 and nape dusky ; aides of the head with two dusky sUipes and several irregular spots Of 

 the same co.or; throat with a dusky streak on each side. Otherwise similar io 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 in northern Illinois, but 

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



Colymbus nigricollis californicus (Heerm.) 



AMERICAN EARED. GREBE, 



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



Podiceps auritus NOTT. Man. ii, }Stt4,< 256 (neC Colyjribus aurltus LINN.).*-AUD. Orn. Biog. 



v. 1839, 108, pi. 4Q4; Synop.1839. 358; B. Am. vii. 1814. 322, pL 482. LAWB. in Balrd'8 B. 



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

 Podiceps californicus HEERM. Proc. Acad. Nat. Sci. Phila. 1854, 179; Pacific R. R. Rep. X 



1859. 76, pi. S.(young). LAWS, in Baird's B. N. Am. 1858, 896. BAIBD, Cat N. Am. B. 



1859, No. 707. 



*An adult male killed at Washington, D. C., April 2J, 1885. had the unfeathered parts 

 colored somewhat ditfcrently, as follows: Bill black, with the tip and a considerable por* 

 tion of the base of the lowcj^mandible'pale lilac-gray; line of bare skin running from rictus 

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

 of tarsus and under side of toes.'black; Itmefside of tarsus and upper surface of toes gray- 

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

 salmon-color. 



