SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 



Bulletin 195 



LIFE HISTORIES OF NORTH AMERICAN 



NUTHATCHES, WRENS, THRASHERS 



AND THEIR ALLIES 



ORDER PASSERIFORMES 



BY 



ARTHUR CLEVELAND BENT 



Taunlon, Massachusetts 



UNITED STATES 



GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1948 



For sale by the Superintendent of Documents, U. S. Government Printing Office 

 Washington 25. D. C - Price J1.7S 



