Average numbers of waterfowl harvested during the 1971-80 hunting seasons are estimated by species for each county in the continental United States. A brief account of the estimating procedure is included.

A bibliography comprising annotated citations of 2037 scientific and technical publications from ten series issued by the U.S. Fish and Wildlife Service. Includes a six-page introduction containing a history of the Service and a description of the research and development series.

Special edition of the Federal Register, containing a codification of documents of general applicability and future effect ... with ancillaries.

A study of canvasback (Aythya valisineria) breeding populations, nest success, productivity, and habitat requirements was conducted from 1961 to 1972 on a 181.3 square kilometer area south of Minnedosa, Manitoba.

This important compilation on habitat management for waterfowl throughout North America addresses practicing waterfowl biologists and managers, researchers, and students of waterfowl ecology and management.