UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 862 



y Contribution from the Bureau of Biological Survey 

 E. W. NELSON, Chief 



Washington, D. C. PROFESSIONAL PAPER * December 30, 1920 



POOD HABITS OF SEVEN SPECIES OF 

 AMERICAN SHOAL- WATER DUCES 



By 



DOUGLAS C. MABBOTT, Assistant in Economic Ornithology 



CONTENTS 



Introduction . . 

 Gadwall .... 

 Baldpate .... 

 European Widgeon 

 Green-winged Teal 



Blue-winged Teal 

 Cinnamon Teal . 

 Pintail .... 

 Wood Duck . . 



Page 

 22 

 28 

 31 

 37 



WASHINGTON 

 GOVERNMENT PRINTING OFFICE 



1920 



