SMITHSONIAN MISCELLANEOUS COLLECTIONS 

 VOLUME 111, NUMBER 16 



THE FORMS OF THE BLACK 

 HAWK-EAGLE 



(With One Plate) 



BY 

 HERBERT FRIEDMANN 



Curator, Division of Birds, U.»S. National Museum 



(Publication 4013) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



FEBRUARY 28, 1950 



