276 Trans. Acad. Sci. of St. Louis. 



on the bare ground in dense growths of scrub oak or in second 

 growth timber on burnt over hillsides. Three sets in the Tin- 

 dall collection were taken on the following dates: May 7, 1901, 

 May 20, 1903, June 12, 1915. 



It is numerous about Swope Park and Dodson and along the 

 river bluffs. 



Phalaenoptilus nuttalli nuttalli (Audubon). Poor-will. 

 Formerly a rare summer resident. 



Bush reports that the Poor-will formerly nested on the open 

 country near Swope Park and Dodson. He frequently heard the 

 mournful cry of this bird in the neighborhood of Grandview. 

 Efforts to find the Poor-will in this county during the summers 

 of 1916 and 1917 proved unsuccessful, though it may yet be 

 found still occasionally breeding on the prairie regions of south- 

 ern Jackson County. 



Choedeiles virginianus virginianus (Gmelin). Nighthawk. 

 Abundant migrant and fairly common summer resident. 



The first Nighthawks arrive usually on the 26th, 27th or 

 28th of April followed by great numbers of migrants during 

 the next three or four weeks. The southward moving flocks 

 pass through during September and early October. 



Like other members of this family the Nighthawk builds no 

 nest but lays its two eggs on the bare ground or rocks or on the 

 flat roofs of the tall buildings in the business district of the 

 city. As a breeder it is found chiefly along the northern bound- 

 ary of the county but ranges out over the prairie country to 

 feed. It is probable that it may nest along the rocky ledges in 

 the Swope Park district. 



Chordeiles virginianus henrti Cassin. Western Nighthawk. 

 Regular but not numerous migrant. 



Resting flocks of migrating Nighthawks have often been seen 

 to contain birds of varying degrees of pallidity. Some of the 

 individuals are only slightly lighter in color than the native 

 birds while others are so very decidedly lighter that they can 

 be distinguished as far as the flock is visible. There is very 

 little doubt that these forms are the Western and Sennett sub- 

 species but it would be well to take specimens. 



