370 



ZOOLOGY— BIRDS. 



In the whole extent of region traversed by the survey in Eastern 

 Arizona, this Whippoorwill was found common. It was especially numerous 

 near Camp Apache and in the White Mountains, and I have heard them, in the 

 latter part of August, for half a dozen miles, singing soon after dusk within a 

 short distance of each other. It begins to fly but a short time before dark, 

 and on this account is rarely met with and difficult to procure. Should a 

 beaten road chance to pass through the forest, it will be found to be a 

 favorite hunting ground. I have often noticed that they make their first 

 appearance in such a spot just before dusk, and remain in the neighborhood 

 during the early evening. Probably the well known abundance of flies 

 and insects which frequent such places affords an explanation of this habit. 

 The males continue their notes till very late in the season ; for I frequently 

 heard them during the first part of October, and even as late as the 17th. 

 Young birds differ from the adult in having a lighter, purer shade of ash 

 above and a suffusion of cinnamon over the back and wings. Below is a 

 general fulvous tint, especially noticeable on the throat patch. 



No. 



Sex. 



Locality. 



Date. 



Collector. 



Wing. 



Tail. 



Bill. 



1 

 Tarsus. 



90 

 612 

 737 



762 



703 



762 A 



874 



126 



194 



195 



307 



155 



890 



$ ad. 

 9jun. 

 9 ad. 



9 ad. 

 9 ad. 

 9 ad. 

 9jun. 

 <?jun. 

 $ ad. 

 $ ad. 



<?jun. 

 9 ad. 





May 15, 1873 

 Aug. 25, 1873 

 Sept. 11, 1873 



Sept. 12, 1S73 

 do 



H. W. Henshaw 



do 



do 



5.64 



5-63 

 5.80 



5-7° 

 5.S7 



5-59 



5-55 



3.61 



3-3° 

 3.80 



3-47 

 3-67 

 3-4S 

 3.66 



o.43 

 0.40 

 0.42 



°-43 

 0.43 

 0.41 

 0.45 



0.71 

 0.71 

 0. 72 



0. 69 

 o-73 

 o-73 

 0.68 



Camp Apache, Ariz 



Thirty miles south of 



Camp Apache, Ariz. 



do 



do 



do 



do 



do 



do 



do 



Willow Spring, Ariz . . . 

 Rock Canon, Ariz 



Sept. 26, 1S73 

 July 13, 1874 

 July 21, 1874 

 do 



do 



do 



do 











do 









do 



Fort Garland, Colo . .. 

 Mount Graham, Ariz . . 



Aug. 7, 1874 

 Aug. 13, 1874 

 Sept. 27.1874 



Dr. T. T. Rothrock - 









C. E. Aiken 











11. W. Henshaw 





















Fam. CYPSEL1DAE: Swifts. 



PANYPTILA SAXATILIS (Woodh.). 



White-throated Swift. 



Acanthylis saxatilis, Woodh., Sitgreave's Exp. Zuiii & Col. Eiv., 1854, 64. 

 Panyptila saxatilis, Coues, Key N. A. Birds, 1872, 182. — Henshaw, An. Lye. Nat. Hist. 

 N. Y., xi, 1S74, 8.—I<l, An. List Birds Utab, 1872, Wheeler's Exped., 



