. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 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. Please note that
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 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. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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