UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 794 
Contribution from the Bureau of Biological Surrey 
E. W. NELSON, Chief 
Washington, D. C. PROFESSIONAL PAPER March 23, 1920 
WATERFOWL AND THEIR FOOD PLANTS IN 
THE SANDHILL REGION OF NEBRASKA, 
Part I. WATERFOWL IN NEBRASKA 
By HARRY C. OBERHOLSER, Assistant Biologist 
Part II. WILD-DUCK FOODS OF THE SANDHILL 
REGION OF NEBRASKA 
By W. L. McATEE, Assistant Biologist 
CONTENTS 
GENERAL INTRODUCTION . 1 
Part I. WATERFOWL EN NEBRASKA : 
Introduction . • 3 
Effect of Federal Protective Laws 3 
Future of Waterfowl in the Sandhill Region ....... 4 
Natural Enemies 6 
Hunting Grounds 8 
Waterfowl Hunting in the Autumn of 1915 8 
General Description of the Sandhill Region . . . . . . . . 10 
Annotated List of Birds 22 
Game Birds 22 
Nongame Birds 31 
Part II. WILD-BUCK FOODS OF THE SANDHELL REGION OF NEBRASKA: 
Introduction 37 
Improvement of the Wild-Duck Food Supply . . . . . . 38 
Effect of Alkaline Conditions on Duck-Food Plants ..... 38 
List of Plants of the Sandhill Lakes 40 
List of Lakes Visited 40 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1920 
