Issued May 24, 1911. 



U. S. DEPARTMENT OF AGRICULTURE 



BIOLOGICAL SURVEYBULLETIN No. 37 



HENRY W. HENSHAW, Chief 



A ''"/ 



FOOD OF THE WOODPECKERS OF THE 

 ^~ UNITED STATES 



BY 



F. E. L. BEA] 



Assistant, Biological Survey 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 

 1911 



