PASSERES OSCINES— -SYLVICOLIDiE. 



43 



Oar observations warrant the belief that the HelminthopMlce are 

 rare birds here. Only these four species have ever been found, and the 

 data with regard to their times of arrival and departure remain to be 

 ascertained, as they did twenty years ago. Doubtless all four actu- 

 ally occur each season, but they are all local prizes, not to be had every 

 year. Several specimens of pinus, chrysoptera, and ruficapilla were taken 

 in May of "the great '82." 



35. (76.) Dendrceca aestiva (Gm.) Bd. Summer Warbler ; Yellow Warbler. 



A summer resident ; very abundant. It breeds in numbers in the 

 city, placing the nest in the forks of twigs in garden, orchard, and orna- 

 mental trees. It is scarcely to be found in high open woods with the 

 other Dendrcecce, being almost as domestic in its tastes as a House Wren. 

 It arrives April 25, and the city is soon enlivened with its blithe, famil- 

 iar notes, reiterated at frequent intervals as the golden little body flut- 

 ters through the opening shade trees of the streets and parks. The 

 greater number pass on in May, returning in September, during which 

 month all leave for the south. [HI] 



3(*. (68.) Dendrceca virens {Gin.) Bd. Black-throated Green Warbler. 



Spring and autumn migrant; does not breed here. In spring, May 

 1 to 20; in fall, September 7 to October 2. Abundant during these 

 periods in high open woods. M 1 -] 



Fig. 11. — Black-throated Green Warbler, liat. size. 



73. (CO.) Dendrceca ccerulescens (Linn.) Bd. Black-throated Blue Warbler. 



Spring and autumn migrant, like the preceding, and during the same 



periods ; rather less numerous, and perhaps oftener seen in thickets. [117] 



D. ccerulea, the Crerulean Warbler, undoubtedly occurs, and will be 

 found in the course of time; but we have never known it to be seen 

 here. 



