BLACK-THROATED GRAY WARBLER 151 



BLACK-FRONTED WARBLER 



DENDROICA AUDUBONI NIGRIFRONS (Brewst.) 



Subspecific Characters. Similar to D. a. auduboni but larger and more 

 widely streaked with black; the Spring c? with the forehead, cheeks, and sides 

 of crown black; black below extending to the belly and without grayish tips. 

 Wing, 3.10; tail, 2.35; bill, .40. 



General Distribution. High Sierras of western Mexico north to 

 Arizona. 



Summer Range. High Sierras of northwestern Mexico from 

 Durango north to the Chiricahua, Huachuca and Santa Catalina Moun- 

 tains, southern Arizona. 



Winter Range. Western Mexico. 



Spring Migration. Huachuca Mountains, Arizona, April 5, 1903, 

 May 9, 1902. 



The Bird and its Haunts. Discovered by Frazar in the Sierra 

 Madre of Chihuahua in 1888 (Brewster 1 ) , this subspecies was added 

 to our fauna in 1894 by Price who took eleven specimens in the 

 Huachuca and Chiricahua Mountains of southern Arizona (Loomu 2 ). 

 Ridgway records an intermediate breeding male from mountains near 

 the head of Pecos River, New Mexico. 



BIOGRAPHICAL REFERENCES 



(i) WM. BREWSTER, Descriptions of Supposed New Birds from Western 

 North America and Mexico, The Auk, VI, 1889, 94. (See also colored plate, 

 No. I, in Ibid., IX, 1892.) (2) L. M. LOOMIS, An Addition to the A. O. U. 

 Check-List, Auk, XVIII, 1901, 110. 



BLACK-THROATED GRAY WARBLER 



DENDROICA NIGRESCENS (Towns.) Plate XIII 



Distinguishing Characters. The general gray color, black or black and 

 white throat and entire absence of yellow, except the spot before the eye 

 readily distinguish this species. Length (skin), 4.30; wing, 2.40; tail, 2.00; 

 bill, .40. 



Adult 3, Spring. Crown largely or entirely black; cheeks black bordered 

 by white below; a broad white line behind the eye, a yellow spot before it; 

 back gray, its center streaked with black ; tail edged with gray, the two outer 

 feathers largely white on both webs, third feather white on the inner web 

 at the end; wings edged with gray, the secondaries internally margined with 

 white, the greater and median coverts broadly tipped with white forming two 

 conspicuous bars; throat and upper breast black (rarely mottled with white) 

 sharply defined from rest of underparts, which are white; sides streaked with 

 black. 



Adult <$, Fall. Similar to adult <$ in Spring but upperparts and cheeks 

 more or less margined with brownish gray; throat margined with white, sides 

 washed with brown, the black streaking s obscured. 



