38 THE BIRDS OF 



to place in the branches of the trees, 

 whereas the latter creeps over the trunks 

 of the trees. One mark distinguishes 

 them; the crown of the former is jet 

 black and the crown of the latter is 

 striped black and white. The female 

 Black-poll is olive green. 



ViREOS 



The two most common Vireos of 

 the Somerset Hills are the Red-eyed and 

 Yellow-throated. The first has a gray 

 back and silky white breast, with a white 

 line underscored by a black one above 

 the eye. The second or Yellow-throated 

 Vireo is green on the back and has a 

 bright yellow breast. This is the 

 smaller species. The Vireos build a 

 hanging nest attached in three or four 

 places to a branch, and frequently con- 

 taining birch bark in its composition. 



