SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 



Bulletin 197 



LIFE HISTORIES OF NORTH AMERICAN 



WAGTAILS, SHRIKES, VIREOS, AND 



THEIR ALLIES 



ORDER PASSERIFORMES 



BY 



ARTHUR CLEVELAND BENT 



Taunton, Massachusetts 



UNITED STATES 



GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1950 



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

 Washington 25, D. C. - Price gl.SO 



