Conclusions and recommendations from studies under stabilized duck hunting regulations : management implications and future directions / Rollin D. Sparrowe and James H. Patterson.

In 1979, a 5-year program of stabilized duck hunting regulations was initiated in Alberta, Saskatchewan, and Manitoba through the cooperation of the Canadian Wildlife Service and the three Prairie Provinces. In 1980 the U.S. Fish and Wildlife Service, with support from the Flyway Councils and other organizations, agreed to join Canada in this program by stabilizing seasons lengths and bag limits for a 5-year period beginning with the 1980-81 season, at the 1979-80 hunting season level.During this period, Canada and the U.S. have cooperated in investigating the relationship between duck populations and duck harvests continentally in the absence of annual changes in season lengths and bag limits. This program has also provided biologists an opportunity to study those factors associated with the regulation of duck numbers,including specific investigations of seasonal survival rates, hunting activity, and recruitment.