90 The Chimney Swift 



much larger scale; chimney swifts varying in number 

 from twelve to fifteen hundred gathered each night, 

 apparently from the surrounding country, to roost in 

 an old fashioned chimney in an untenanted house on 

 Nassau Street. How one chimney can possibly hold 

 so many birds is a mystery which I have never yet 

 been able to solve! 



