520 Colorado College Publication 



tinge on the breast, a tendency toward the northwest coast 

 form saturatior. 



The holes are usually excavated in dead wood, at almost 

 any height from five to fifty feet or more from the ground. 



O'Connor killed three Flickers with black cheek marks 

 and yellow shafts about May 1, 1911, ten miles east of Foun- 

 tain. 



Phalaenoptilus nuttalli nuttallt. Poor-will. 



Summer resident ; common. Arrives usually early in 

 May, the earliest date being April 27, 1899, and departs late 

 in September or early in October, having been noted on Oc- 

 tober 4th, 1904. 



This species seems to be largely or entirely a bird of the 

 foothills, and apparently at times ranges quite high, for War- 

 ren found young in the Sangre de Christo mountains, July 

 11, 1909, at an elevation of above 10,000 feet, ^t spends the 

 day on the ground on the brush covered hillsides, flying out. 

 into the open spaces at dusk to hunt insects. 



Chordeiles virginianus henryi. Western Nlghthawk. "Bull 

 Bat." 



Summer resident; common. Arrives about May 23, de- 

 parts usually by September 25. 



The Nighthawk is common on the plains and the higher 

 open ground, its habits being similar to those of the eastern 

 bird, spending the day on the ground, on top of a post, or 

 perched lengthwise on a limb or fence rail: The eggs, usually 

 two, sometimes only one, are laid on the bare ground without 

 the slightest semblance of a nest. 



August 2, 1909, what appeared to be a migratory move- 

 ment of Nighthawks was seen a few miles south of Buttes 

 station; altogether from 50 to 100 of the birds were seen, all 

 flying southerly in a leisurely manner and not hunting insects. 



