J 76 



U. S DEPARTMENT OF AGRICULTURE 



BIOLOGICAL SURVEY— BULLETIN No. 27 



C. HART MERRIAM, Chief 



THE 



NORTH AMERICAN EAGLES 



i 



AND 



THEIR ECONOMIC RELATIONS/ 



3 12 



HARRY C. OBERHOLSER 



ASSISTANT ORNITHOLOGIST, BIOLOGU&L SURVEY 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1 9 6 



