164 WARBLER. 



the middle; legs brown. This is the male, which varies in the black 

 on the chin not being pure, tbe feathers fringed with grey ; sides of 

 the body tinged with yellow over the thighs; sides under the wings 

 mixed with black in both ; there is a tinge of green also in the 

 plumage; the three outer tail feathers have less white. The last is 

 probably a young bird. 



The female is olive above, and dull pale yellow beneath, with a 

 narrow dusky streak on each jaw ; spot on the wing as in the male, 

 the white on the tail feathers takes up less space, and has a dirty 

 tinge. 



Inhabits Pennsylvania, arrives there in April, and after breeding, 

 goes away in autumn ; but is not common ; also found in the swamps 

 of Georgia, but in these the black occupies more of the sides of the 

 head, than in the PL enlum. as it completely takes in the eyes. One 

 of them was taken at sea, in a calm, eight or ten leagues from Saint 

 Domingo. 



212. -BLUE-GREY WARBLER. 



Sylvia caerulescens, Ind.Orn.W. 520. Vieill. Am. ii. pi. 80. 

 Motacilla caerulescens, Gm, Lin. i. 960. 

 LaFauvette bleuatre de S. Domingue, Buf. v. 164. 

 Blue-grey Warbler, Gen. Syn. iv. 440. 



LENGTH four inches and. a half. Plumage above cinereous 

 blue; wing coverts and quills brown, on the former a spot of white, 

 the latter edged with cinereous blue ; throat black, the rest of the 

 under parts white. 



Inhabits St. Domingo, and neighbouring Isles ; for the most part 

 seen on tall trees, from whence it darts down on insects, in the 

 manner of the Flycatcher; observed to wag the tail like the Wagtail. 

 This, and the Black-throated, supposed by M. Vieillot, to be one 

 and the same. 



