Brewster on Birds from Arizona and New Mexico. 7 1 
approach to the type of arizonce , in* its large size (wing 6.50), 
in the great length of the rictal bristles, and in the decided taw- 
ny-ochraceous of the lores and auriculars. The gular-crescent is 
however mixed with white, and the white areas of the tail are 
nearly as extended as in typical vociferus. It is possible that 
this bird represents the form characteristic of Northern Mexico 
but in the absence of more satisfactory data regarding its history, 
the characters which it presents have no direct bearing on the 
case in hand. Specimens intermediate between vociferus and 
arizonce are of course to be expected and the Guanajuato example 
is simply one of these. 
The most western point within the United States from which 
the Whip-poor-will has been previously announced is the valley of 
the Lower Rio Grande in Texas, where both Merrill and Sennett 
found it in small numbers. 
The distribution of the Arizona form must be exceedingly 
local. Mr. Stephens has never before met with it, and Mr. Hen- 
shaw failed to detect it during his very thorough explorations. 
Dr. Coues, however, probably heard it at Fort Whipple* in 1865, 
but no specimens were actually obtained there. 
In the Chiracahua Mountains it is apparently not uncommon, to 
judge from the following notes which accompanied my specimen. 
kt I have heard several of these Whip-poor-wills singing at one 
time and am told that they were heat'd here last year. I hear A. 
nuttalli every evening. They keep high up the mountain sides, 
while A. vociferus affects the lower part of the canons. This is 
the only locality east of the Missouri River where I have found 
the latter species.” 
In a recent letter Mr. Stephens adds : “ I heard the first Whip- 
poor-will about the middle of May. By June i, they were as 
common as I ever knew them to be in the East. Sometimes I could 
hear three or four whistling at once. They were very restless and 
rather shy, so I got only the specimen I sent you, and a female 
shot in the daytime. The latter flew off her nest, which, as 
usual, was only a very slight depression in the ground, but in 
this case was overhung by a rock. The single egg (now before 
me) is plain white, with very faint browish spots, so faint that 
one would hardly notice them. She would have laid no more. 
This was on July 4, 1880. The people in the canon said they 
* Ibis, 1865, 538. 
