Jan., 1909. Birds of Illinois and Wisconsin — Cory. 643 



Genus VERMIVORA Swainson. 



304. Vermivora pinus (Linn.). 

 Blue-winged Warbler. 



Helminthophila pinus (Linn.), A. 0. U. Check List, 1895, p. 270. 

 Distr.. Eastern United States, from Kansas, Nebraska, and South 

 Dakota eastward and south from southern New England, Wisconsin, 

 and Minnesota; ranges in winter to Central America and northern 

 South America (Colombia) ; breeds from Georgia, Tennessee, and 

 Oklahoma northward. 



Adult male: Q-own and under parts, bright yellow, under tail 

 coverts, whitish; back and rump, clear olive green; a black line 



through the eye ; primaries, fuscous brown, 

 edged with grayish on outer webs and dull 

 white on inner webs; greater and middle 

 wing coverts, edged with white, forming 

 wing bars ; tail, brownish gray, the inner 

 webs of the two outer tail feathers, mostly 

 white. 



Adult female: Similar, but paler and the yellow crown patch 

 smaller. 



Length, 4.75; wing, 2.45; tail, 2; bill, .42. 



This species is a rather common summer resident in southern 

 Illinois and a casual summer resident in northern Illinois; rare in 

 southern Wisconsin. 



Mr. Ridgway found it breeding at Mt. Carmel, 111., and Mr. E. 

 W. Nelson in his Birds of N. E. Illinois, gives it as an "abundant 

 migrant," which is not the case at the present time. Mr. Frank M. 

 Woodruff gives half a dozen records of its occurrence in northeastern 

 Illinois (Birds of the Chicago Area, 1907, p. 157), and Messrs. Kumlien 

 and Hollister give eight records for southern Wisconsin, including a 

 female with nest and eggs taken near Delavan, May 22, 1899 (Birds of 

 Wisconsin, 1903, p. 100). 



The nest is usually on the ground and is composed of leaves and 

 shreds of bark. The eggs are 5 or 6, pure white, finely and rather 

 irregularly speckled with brown chiefly at the larger end, and measure 

 about .60 X .49 inches. 



