164 MARCH 



There are other birds, too, which stay with us 

 all winter. 



But the blackbirds left us last autumn. 



They are beginning to come back again now. 



While they were away we had other bird 

 visitors. 



Many of you saw the snowbirds. 



Some of you heard the chick-a-dee-dee, chick- 

 a-dee-dee. 



Why do birds travel so much more than 

 people ? 



Perhaps you think that they do not like the 

 cold. 



It is partly true. 



But this is the real reason for the change. 



When cold weather comes they cannot find 

 enough food. 



