APPENDIX. 341 



I shot a single pair of these birds in a pine forest on the Co- 

 lumbia river, on the 28th of May, 1835. They were flitting 

 about among the pine trees, very actively engaged in searching 

 for insects, and frequently hanging from the boughs like titmice. 



Black-throated Gray Warbler. 



Sylvia *nigrescens, (Townsend.) Journal Acad. Nat. Sci- 

 ences, Vol. 7, part II, p. 191. Audubon's Birds of America, 

 Vol. IV, pi. 395, male. 



The bill is black, and stout ; crown and hind head black, the 

 feathers edged with grayish-plumbeous ; a line from the lower 

 mandible on each side of the head, extending to the neck, white; 

 a similar broad white line above the cheeks, running parallel 

 v/ith the first, and approaching it on the neck ; a small bright 

 yellow spot on the lores ; upper parts grayish-plumbeous, the 

 back and upper tail-covei"ts with a ^ew oblanceolate spots of 

 black ; wings and tail dusky, the former with two white bands ; 

 and the three exterior feathers of the latter with white on their 

 inner vanes ; throat and pectoral collar black; flanks with nu- 

 merous spots of black ; axillaries grayish-white ; belly and vent 

 white, with a tinge of yellowish. Legs and feet dusky-brown. 

 Length nearly 5 inches. Extent of wings 7 inches. 



This species is not uncommon in the forests of oak on the Co- 

 lumbia river. It is, however, singularly retired and seden- 

 tary. Its note is a rather feeble, but agreeable warble. 

 Sings chiefly in the morning early ; silent at mid-day. I have 

 reason to believe, that at least a ky^ pairs breed on the Columbia, 

 but I have never been so fortunate as to find the nest. 



Townsend's Warbler. 

 Sylvia * Townsendi, (Nuttall,) Jour. Acad. Nat. Sci. Vol. 7, pt. 

 II., pagel91. Audubon's Birds of America, Vol. IV. pi. 393. Male. 

 The crown, lores, a broad patch through the eye to the hind- 

 head, and throat, deep black, the first thickly touched towards 

 the back part, with greenish ; back and rump greenish- 

 yellow, spotted all over with black, the spots somewhat 

 concealed b)'' the recumbent plumage ; wings dusky-cinereous, 

 edged with grayish lead-color, and crossed by two "ra- 

 ther broad bands of white ; tail emarginate, of twelve dusky 

 feathers, the three lateral ones, with white on their inner 

 vanes ; over the eye, from the bill to the hind-head, is a broad 



