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 



ROBERT RIDGWAY 



Continued by 



HERBERT FRIEDMANN 



Part IX 



Family Gruidae — The Cranes 



Family Rallidae — The Rails, Coots, and Gallinules 



Family Heliornithidae — ^The Sun-grebes 



Family Eurypygidae — The Sun-bitterns 



UNITED STATES 



GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1941 



For sale by the Superintendent of Documents, Washington, D. C. ------- Price 40 cents (Paper) 



'QQiirn ^'^•^ 9 trtMt 



