220 



The Chimney Swift 



other birds. On the contrary, the home of the swift 

 is rather rough within, while the entire surface, inside 

 and out, has a glistening appearance due to the 

 abundance of saliva which is used, not only at the 



Nest and Young of the Chimney Swiit 



intersection of the twigs, but also scattered some- 

 what promiscuously over thern. The saliva when dry 

 is a hard glue-like substance, possessing considerable 

 strength, but when moistened by continued rains it 



