Ayes to which Birds live. 



35 



has been added wherever obtainable, because Brehm thinks 

 there are more male birds than females, and it may be that 

 Nature, to compensate the balance, gives longer life to the 

 female. The three oldest birds of which the sex is known 

 were females, viz. : — $, Anser domesticus, of 80; $, Bubo 

 maximus, of 68 ; $ , Coracopsis vasa, of 54. 



d2 



