354 



WOOD WARBLERS. 



bright colors and preference for gardens, orchards, the shrubbery of 

 our lawns or bushy brooksides, instead of the woods, frequently brings 

 it to the attention of those to whom most birds are strangers. 



It is an active bird, and its song wee-chee, chee, chee, cher-wee 

 though simple, has a pleasing, happy ring. 



// 654. Dendroica caerulescens (Gmel.). BLACK-THROATED BLUE 



WARBLER. Ad. 4 . Upper parts grayish blue, back sometimes blackish ; 

 wings and tail edged with blue ; base of the prirnari,'* white, forming a white 

 spot on the wing at the end of the primary coverts ; inner vanes of outer tail- 



Fio. 101. Black-throated Blue Warbler. (Reduced.) 



feathers with a white patch near their tips ; sides of the head and throat black ; 

 sides mixed black and white; breast and belly white. Ad. 9. Upper parts 

 uniform olive-green ; tail generally with ;i faint bluish tinge, the white patch 

 on the outer feathers scarcely difttingoishftble; white at the base of the prima- 

 ries much reduced and sometimes concealed by the primary coverts ; ear-cov- 

 erts dusky gray ; under parts soiled bully yellowish. Im. $ . Similar to ad. 

 S , but the upper parts washed with greenish, the throat tipped with white, 

 and less black on the sides. Im. 9 . Similar to ad. 9 , but somewhat yellower. 

 L., 5-28; W., 2-52 ; T., 2-06 ; B. from N., -29. 



Remarks. The white spot at the base of the primaries is the distinguish- 

 ing mark of this species. 



Range. Eastern North America; breeds from northern Minnesota (prob- 



