THE GRAY SQUIRREL 407 



The black individuals are examples of melanism; the white, 

 of albinism. Both conditions are quite common among 

 squirrels. 



The calls of the gray squirrels to each other may often be 

 .heard in the woods, especially in the fall. The " barking," as 

 it is termed, consists of a series of notes ending in a longer 

 snarl. It expresses anger, alarm, or warning. Gray squirrels 

 have sometimes been encouraged to make their homes in city 

 parks, where they soon learn to accept and finally to be 

 largely dependent on contributions of food from human 

 visitors. 



