REPORT UPON ORNITHOLOGICAL SPECIMENS. 



129 



117. Chordeiles acutipennis (Bodd.), var. texensis, Lawr. Texas Night- 

 Hawk. 



Specimens obtained on the Gila River September 14, where it was 

 abundant. Made its appearance perhaps half an hour before dusk, 

 keeping over the river, where, in pursuit of insects, it flew swiftly in 

 irregular circles. The common night-hawk was also present and associ- 

 ating freely with it, though the present species was the most abundant. 



118. Antrostomus nuttalliij (Aud.) Nuttall's Poorwill. 



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

 zona, this wbipporwill was found common. It was especially nuinerou 8 

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

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

 within a short distance of each other. It begins to fly but a short time 

 before dusk, and on this account is rarely met with and difficult to pro- 

 cure. 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 auh above and a suffusion 

 of cinnamon over the back and wings. Below is a general fulvous tint, 

 especially noticeable on the throat-patch. 



OYPSELID^E (the Swifts). 



119. Panyptila saxatiliSj (Woodh.) White-throated Swift. 



This swift was found in considerable numbers flying over some lofty 

 sandstone cliffs in the neighborhood of Wingate. They seem rarely to 

 descend into the canons and valleys, but pass to and fro above "the 

 highest points, keeping up a shrill twitter as they dart by with wonder- 

 ful velocity. By ascending the highest points, we succeeded after some 

 trouble in securing three specimens. In a large cave near by, I saw 



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