The Singing of Birds, E. P. Bioknell, 
Chordeiles virginianus. Night-jar. 
The sharp cry of this bird is to be heard in spring, summer, and 
autumn, and doubtless is independent of the seasons. I have no 
Personal knowledge as to the seasonal limitations of its well- 
known ‘booming,’ and aerial evolutions. 
Ank, 2, July, 1885. p. Z 6~ 7 - 
