I Iowa 



Geological Survey 



Bulletin No. 6 



THE RAPTORIAL BIRDS OF IOWA 



By BERT HEALD [BAILEY, M. S., M. D. 



"You slay them all! and wherefore?" Longfellow. 



GEORGE F. KAY, PH. D. STATE GEOLOGIST, 

 JAMES H. LEES, PH. D., ASSISTANT STATE GEOLOGIST 



DOCUMENTS DtPAKlMtiil 



APR 26 1956 



LIBRARY 



DES MblNES 



PUBLISHED FOR THE IOWA GEOLOGICAL SURVEY 



1918 



