SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 



Bulletin 50 



THE BIRDS OF 

 NORTH AND MIDDLE AMERICA 



A DESCRIPTIVE CATALOG 



OF THE 



HIGHER GROUPS, GENERA, SPECIES, AND SUBSPECIES OF BIRDS 



KNOWN TO OCCUR IN NORTH AMERICA, FROM THE 



ARCTIC LANDS TO THE ISTHMUS OF PANAMA 



THE WEST INDIES AND OTHER ISLANDS 



OF THE CARIBBEAN SEA, AND THE 



GALAPAGOS ARCHIPELAGO 



By 

 HERBERT FRIEDMANN 



Part XI 



Family Cathartidae — The American Vultures 



Family Accipitridae— The Hawks, Eagles, Kites, Harriers, and 



Old World Vultures 

 Family Pandionidae — The Ospreys 

 Family Falconidae — The Falcons and Caracaras 



UNITED STATES 



GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1950 



For sale by the Superintendent of Documents, U. S. Government Printing Office, Washington 25, D. C. 



Price 24.00 (paper) 



