12 BIRDS OF EAST PE^'XSYLVA^^A. 



Whip-poor- Will. . . Antrostomus voci/erus. Rather com- 

 mon, from the end of April to the 

 beginning of September. It appears 

 to be less frequent near the coast. (S.) 



Night Hawk. . . . Chordeiles jxpetue. Night Jar. Bxtll 

 Bat. Abundant from the middle of 

 April to September. Often seen high 

 in the air above the streets of Philadel- 

 phia, and its nest has frequently been 

 found on the roofs of warehouses. (S.) 



Chimney Swallow. . . Chaetura j^elasr/ia. Common. Arrives 

 in the middle of April, and departs 

 early in September. (S.) 



ORDER— INSESSORES. (Perching Birds.) 



Barn Swallow. . . . Hirundo Jion-eorum. Common from 

 the end of March to the end of 

 September. (S.) 



Olifi" Swallow. . . . Hirundo luni/ivns. A rather rare 

 Summer visitant, but every year 

 increasing in numbers. It arrives in 

 April. (S.) 



