CONTENTS 



Foreword v 



The Division ok Wildlife Research 1 



The research program 1 



Organizat ion 2 



Special Research Developments 3 



Endangered wildlife species 3 



Captive propagation 3 



Sandhill crane propagation 3 



Whooping crane propagation 4 



Rare geese 4 



Biid banding 6 



Bat banding 6 



Research under way on the Woodworth area 7 



New Research Facilities 7 



Bird and Maninial Laboratories 7 



Denver Wildlife Research Center 8 



Migratory Bird Populations Station 8 



Northern Prairie Wildlife Research Center 8 



Patuxent Wildlife Research Center 8 



Research Hichi.ights of the Year 11 



Waterfowl Management Research 11 



Studies of major waterfowl species 11 



Machine data processing unit 13 



Mail surveys of waterfowl hunters 13 



The duckling banding program 14 



Duck wing collection survey 14 



Whistling swan hunting survey 14 



Goose-tail collection survey 14 



Rapid waterfowl habitat inventory method. 15 



Cooperative white-fronted goose trapping and banding 15 



Goose production and population stability study 16 



Waterfowl production in the Canadian Parklands 16 



Waterfowl production in the subarctic 17 



Seasonal habitat requirements of canvasbacks 17 



Waterfowl nesting in the southwest Lake Erie region 18 



Pothole permanency in relation to seasonal waterfowl use 18 



Widgcongrass study in Maine 20 



Factors influencing establishment of widgeongrass 20 



Requirements of waterfowl food and cover plants 22 



Fertilization and habitat improvement 23 



Waterfowl-lead shot research underway 23 



A marsh plant circular series 23 



Other migratory birds 25 



Dove wing collection survey 25 



Minimum breeding age of mourning doves 25 



Woodcock productivity 25 



Study of "singing" woodcock completed in Michigan 27 



Upland wildlife ecology. 29 



Deer dispersal 29 



Effect of deer browsing on conifers 29 



Physiological studies of the white-tailed deer 29 



Migration and movement of Yellowstone elk 30 



Effects of livestock fences on antelope movements 31 



Reindeer 31 



