VERTEBRATE ANIMALS OF KENTUCKY. 23 



Humming Birds (Family Trochilidse). 



156. Ruby-throated Humming Bird (Trochüus colubris, 



Linn.). 



A moderately common summer resident. 



Swifts (Family Micropodidse). 



157. Chimney Svvallow (Chcetura pelagica, Linn). 



A very common, summer resident, probably 

 nesting exclusively in unused chimneys. The 

 chimney swift forms the subject of Audubon's ani- 

 mated acconnt of a visit to a large hollow syca- 

 more tree in which this bird collected at night 

 to roost. By cntting a hole at the base he was 

 able to enter the tree where he found the whole in- 

 side covered with birds and estimated that the 

 tree contained 9,000. 



Goatsückers (Family Caprimulgidge). 



158. Night Hawk (Chordeiles virginianus, Gmelin). 



A common summer resident. 



159. Whippoorwill (Antrostomus vociferus, Wilson). 



Not common in blue grass Kentucky, though it 

 occurs in the vicinity of Lexington in spring. 

 "The more barren and mountainous parts of the 

 Union seem to suit it best. Accordingly the open 

 Barrens of Kentucky, and the country through 

 which the Alleghany ridges pass are more abun- 

 dantly supplied with it than any other regio n" 

 (Aud.). 



Woodpeckers (Family Picidse) . 



160. Flicker, Yellow Hammer (Colaptes auralus, Linn.). 



One of our most common birds. A permanent 

 resident. 



