Issued September 19, 1912. 



U. S. DEPARTMENT OF AGRICULTURE 



BIOLOGICAL SURVEY— BULLETIN No. 44 



HENRY W. HENSHAW, Chief 



FOOD OF OUR MORE IMPORTANT 

 FLYCATCHERS 



F. E. L. BEAL 



Assistant, Biological Survey 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1912 



