WHIP-POOR-WILL 
178 
enlivened by a strain of rhythmic melody, but when 
his big black eye detects a tempting insect there is a 
swift and silent flight and a hurried return to his 
shaded perch* This lingering visitor of the northern 
woods will soon be forced by the disappearance of 
insect life to join his friends in the sultry warmth of 
the tropics* 
