100 REMARKS ON THE SWALLOW TRIBE. 
taken at that time and suspended by the wings, it 
will, in a sort of despair, treat itself most cruelly, by 
biting any part it can reach, and when it is loosed, 
instead of escaping, will often resort to its unfledged 
young. This affection ceases at the stated time of 
migration, which is most punctually about the 11th 
of August, when they leave such young as cannot fly 
to the mercy of the Peregrine Falcon, who watches 
the mouths of the holes for the appearance of the 
little deserted Puffins, which, forced by hunger, are 
compelled to leave their burrows.” 
