PHILADELPHIA VIREO. 

 626. Vireosylva philadelphica. 5 inches. 

 This is one of the least common of the eastern Vireos, 

 although it is more common than most people know; 

 its song is not distinctive and it keeps high up in trees, 

 so it is not usually noticed. Their nests are swung from 

 branches at high altitudes and are seldom found. 



WARBLING VIREO. 



627. Vireosylva gilva. 5 inches. 

 Above olive-green; crown grayer but with no black 

 border. These are among the most common of the 

 Vireos and may be found even in the hearts of large 

 cities, swinging their pretty little nests high up in shade 

 trees. Their song is after the style of that of the Purple 

 Finch, very different from that of the Red-eye. The 

 eggs are white with a few brown specks on the large end. 

 These birds breed throughout the U. S. and southern 

 Canada, 



