THE BIRDS OF XEW JERSEY. 275 



Adult female. — t'niform olive above, pale olive-yellow below ; wing edgings 

 tinged with gray ; the white wing spot is less conspieuous than in the male ; 

 there is a white spot on the lower eyelid .and a short streak above the eye ; the 

 outermost tail feather has a lighter subterminal area often scarcely distinguish- 

 able. In autumn, deeper olive. 



Young in first summer. — Olive-browu above, brownish-white below, yellowish 

 on the throat. 



Common transient visitant. Spring, April 27tli (May -ith) to 

 May 20th; autumn, August 25th to Octoher 10th. Probal)ly rare 

 breeder in Sussex county where Mr. S. K. Ehoads saw one June 5th, 

 190!), at Wawayanda Lake. 



Tliis is one of the species composing the regular Warbler waves of 

 ]\Iay, which mark the height of spring migration. These assemblages, 

 which seem to contain all the known varieties of Warblers, so thickly 

 do they swarm in the tree-tops — now one kind, now another — coming 

 within the range of our glass, are characteristic of most of the State, 

 but they seem to avoid the dry pine barrens, the lower trees and 

 drier soil, and prevalence of pines being apparently not to their liking. 



The Black-throated Blue Warbler, both the male and female, may 

 be easily recognized by the white spot on the middle of the wing at 

 the base of tlie primaries, a mark not common to any other species. 



The song of this species has a peculiar harsh or buzzing quality, 

 "wee, zwee, zwe-e-e-." 



655 Dendroica coronata (Linngeus). 

 Mj'rtle Warbler, Yellow-rumped Warbler. 



PLATE 72. 



Adult male. — Length, 5-6. Wing, 2.80. Above, bluish-gray, with black 

 streaks broadest on the back ; a yellow patch on the crown and rump ; wings 

 and tail, blackish, edged with gray ; wing-coverts broadly tipped with white, 

 forming two conspicuous bars ; three outer tail featliers with subterminal white 

 patches on the inner webs ; under surface, white, with a large black breast patch 

 extending down the sides of the chest, where it is bordered just under the edge 

 of the wings with yellow ; flanks streaked with black ; sides of face, black, with 

 a short white streak over the eye and a white spot on the lower lid. In winter, 

 veiled above and below with olive and gray. 



Adult female. — Rather smaller. More or less brown above : sides of face, 

 brown ; black on breast not so extensive and broken by white edgings to the 

 feathers, yellow much paler. 



Youuf/ in first autumn.— i>,im\\av to adult female, l)ut browner, with streaking 

 of upper parts obscured ; breast and sides tinged with brown and thickly 

 streaked with black, streaks more or less obscured by the light edges to the 

 feathers. 



