326 Field Museum of Natural History — Zoology, Vol. IX. 



Length, 14.50; wing, 7.20; tarsus, 1.20; bill, 1.45. 



The Green-winged Teal is common in Illinois and Wisconsin dur- 

 ing the migrations and is claimed to breed sparingly in both states. 



The nest is placed on the ground and is thickly lined with down. 

 The eggs are 6 to 12, usually 9 or 10, pale buff or cream buff in color, 

 and measure about 1.80 x 1.20 inches. 



In Illinois it has been found breeding in the northern portion of the 

 state, " Rockwood, Lacon, and Fernwood." (Cooke, Bull. Biological 

 Survey, 1906, p. 31.) "Breeds sparingly." (Nelson, Birds N. E'. 

 Illinois, 1876, p. 140.) "Formerly bred sparingly even in southern 

 Wisconsin, eggs having been taken on Black Hawk Island, Lake 

 Koshkonong, by L. Kumlien, in May, 1870. At least two other au- 

 thentic nesting records at this place are known. Further north they 

 breed more plentifully, but the larger nuinber pass beyond our 

 border." (Kumlien and Hollister, Birds of Wisconsin, 1903, p. 19.) 



Genus QUERQUEDULA Oken. 



46. Querquedula discors (Linn.).- 

 Blue-winged Teal. 



Anas discors Linn., A. O. U. Check List, 1895, p. 50. 



Distr.: North America in general, but chiefly eastward, breeding 



northward from Kansas and southern Illinois to Alaska; south in 



winter to the West Indies, Central and South America as far as Chili. 



Adult male: Head, gray, with purplish gloss, darkest on top; 



a white patch resembling a crescent in front of the eye; greater and 



middle wing coverts, pale grayish 

 blue, forming a grayish blue patch 

 on the wing; speculum, rich green; 

 under parts, purplish gray, spot- 

 ted on the breast with black; the 

 flanks are narrowly barred with 

 black; bill, black; feet, yellow. 

 Adult female: Showing a blue 

 patch on the shoulder which distinguishes it from other teals, ex- 

 cept the female of Q. cyanoptera, which has the chin dusky; and 

 the upper throat often tinged with rufous. The locality where it is 

 taken should also be considered. 



Length, about 15.75, wing, 7.25; tarsus, 1.20; bill, 1.60. 

 The Blue-winged Teal is a common summer resident in Illinois 

 and Wisconsin, and breeds in May and June in suitable localities 



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9 



