188 ,- THE BIRDS OF NEW JERSEY. 



England and northward and in the higher Alleghanies, 

 and spend the winter in the West Indies and southward. 

 They are common migrants in New Jersey, occurring from 

 May 2 to May 15 and again from September 1 to October 

 10. 



Their song, generally heard from the tops of trees, is 

 likened by Mabel Osgood Wright to an interrogative Will- 

 you-co-me, will-you-come, will-you ? 



Their food consists of insects. 



W arhler^ Blue-winged. — Length, four and three- 

 fourths inches; extent, seven inches; bill, one-third of an 

 inch, bluish black above, lighter below; crown, bright 

 yellow, a black line through the eye; back and rump, 

 bright olive green; breast, belly and sides, bright yellow; 

 tail and wings, bluish gray, the wings with two wing 

 bars, which in some specimens are tinged with yellow. 

 In the female the under parts are less bright and the yel- 

 low on the head is confined to the forehead. 



The nest is built on the ground or in a tussock or bunch 

 of grass, of bark and leaves, lined with finer grasses and 

 tendrils. The eggs are from four to six in number, white, 

 with light brown spots, and two-thirds by one-half an 

 inch in size. 



The birds breed in the eastern United States southward 

 of middle New Jersey, and spend the winter in east- 

 ern Mexico and Guatemala. In New Jersey they are 

 abundant during migrations, appearing between April 26 

 and May 6, all leaving about the first of September. 



Their song, according to Mr. Chapman, is a swee-chee, 

 the former inhaled, the latter exhaled. 



The birds feed on insects, generally gathered from' 

 branches of trees in thick woods or in undergrowth, al- 

 though they also visit gardens, orchards and willow trees. 



tWarbler^ Canadian. — Length, five and two thirds 

 inches; extent, eight and a half inches; biU, one-third of 



