116 BLACK-THROATED BLUE WARBLER 



the base. The female is more of a duskv ash on the breast ; and 

 in some specimens nearly white. 



They no doubt pass this way on their retm^n in autumn, for I 

 have myself shot several in that season ; but as the woods are then 

 still thick with leaves, they are much more difficult to be seen; and 

 make a shorter stay than they do in spring. 



