Jan., 1909. Birds of Illinois and Wisconsin — Cory. 325 



finely pencilled with black; a broad patch of white on the wing; 

 most of the secondaries have the outer web black, edged with white; 

 the inner webs are grayish towards the tip ; speculum, black and green ; 

 axillary plumes, white, with dark shafts. 



Adult female: Head and throat, whitish or buffy white, streaked 

 and mottled with black; back, grayish brown; tertials, dusky, edged 

 with whitish. 



Length, 19; wing, 10.50; tarsus, 1.60; bill, 1.40. 



This species is common in Illinois and Wisconsin during the mi- 

 grations. It is barely possible a few may still breed in northern 

 Illinois, and, according to Kumlien and Hollister, it formerly bred in 

 Wisconsin as far south as Lake Koshkonong and still does so in the 

 less settled portions of the state. The nest is placed on the ground 

 and is mostly composed of feathers and down. The eggs are buffy 

 white, 8 to 12 in number and measure about 2.15 x 1.45 inches. 



• ■ A very abundant species during the migrations and not very rare 

 summer resident." (Nelson, Birds N. E. 111., 1876, p. 140.) W. W. 

 Cooke states it has been known to breed in Illinois. (Report of Bird 

 Migration in Mississippi Valley, 1888, p. 66.) 



Genus NETTION Kaup. 



45. Nettion carolinensis (Gmel.). 

 Green-winged Teal. 



Anas carolinensis Gmel., A. O. U. Check List, 1895, p. 50. 

 Distr.: North America in general, breeding chiefly north of the 

 United States; south in winter to Mexico, Central America and the 

 West Indies. 



Adult male: Head and neck, chestnut brown; a patch of green 

 behind the eye extending to the nape; crown feathers are somewhat 



elongated, forming a small crest; 

 sides and back, pale, marked with 

 narrow fine lines of black; under 

 parts, white, shading into pale brown 

 or buff on the breast, which is also 

 spotted with black; speculum, green, 

 bordered with black and chestnut. 

 Adult female : Top of head, brown- 

 ish, margined with reddish brown; throat and side of neck, white, 

 spotted with black; breast, brownish, with black spots; rest of under 

 parts, white, sometimes showing black spots on the under tail coverts. 



