Curious Habit of Feigning Death 399 
be seen in a subsequent picture, they continue to resort to it when 
nearly full grown. When moved or disturbed they utter a feeble 
twittering call, 
YOUNG GRIFFON VULTURE, ABOUT THREE WEEKS OLD. 
When a young Vulture finds that its most earnest attempts at 
simulating death are ignored and that the intruder persists in 
remaining in the vicinity, it adopts more active and _ stringent 
methods of inducing him to withdraw, which are as unexpected 
as they are unpleasant. For, after recovering consciousness as 
quickly as it had pretended to lose it, it makes a series of bows 
