Family Mniotiltid&- -Green Warbler 71 



24. BLACK-THROATED GREEN WARBLER 



(Dendroica v 



Male, in summer: upper parts yellow-olive, dullest on rump; 

 cheeks yellow ; throat and breast black ; remaining under parts 

 whitish, streaked with black on the sides ; wings and tail dark 

 brown ; wing with two white bars ; tail with white blotches. 

 Beak slender and dark; feet dark. Bird rather more than half 

 the size of a sparrow. Female and male in fall plumage : sim- 

 ilar, but black interrupted or obscured. 



THESE charming birds are to be found especially 

 among pines. They begin to arrive early in May, 

 and for a few days about the middle of the month 

 are very abundant, after which time a large propor- 

 tion of them pass northward. A considerable num- 

 ber, however, spend the entire summer, leaving 

 only in early October. 



The nest, like that of the pine warbler, is placed 

 high in a pine-tree, near the end of a bough, and 

 may be built any time from the first to the last of 

 June. 



The song is said by Burroughs to consist of " two 

 sweet, silvery notes in the same pitch of voice and 

 quite unaccented, followed by notes wherein tone 

 and inflection are changed.'' 



