U. S DEPARTMENT OF AGRICULTURE 



BIOLOGICAL SURVEY— BULLETIN No. 27 ' 



C. HART MERRIAM, Chief 



THE 



NORTH AMERICAN EAGLES 



AND 



THEIR ECONOMIC RELATIONS 



BY 



HARRY C. OBERHOLSER 



ASSISTANT ORNITHOLOGIST, BIOLOGICAL SURVEY 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1 !) r, 



