The primary purpose of the BDJV is to support research on black duck ecology to identify limiting factors and provide management recommendations to guide management. Since 1989 the BDJV and its partners have provided > $4.3 million to support research on black duck ecology and management. Results from BDJV supported research have been incorporated into a variety of management activities.
Current ProjectsArnold, T. W. Estimates of population size for American black ducks during fall and winter derived from banding and harvest data.
Goal: The goal of this project is to develop and evaluate methods to estimate the fall (i.e., pre-hunting season) and winter (i.e., post-hunting season) abundance of black ducks using banding and harvest data. These estimates will provide independent estimates that can be used to evaluate the accuracy of abundance estimates based on breeding and winter surveys or derived from population models.
Brook, R. and K. Abraham. Pilot study to test the feasibility of banding moulting black ducks in Ontario’s Hudson Bay Lowlands.
Goal: The goal of this project is to test and evaluate the feasibility of capturing and banding moulting black ducks during the pre-hunting season period. Data derived from pre-season banding are critical to the development of black duck population models and harvest management.
Coluccy, J. and T. Yerkes. True metabolizable energy of American black duck foods.
Goal: Waterfowl biologists and land managers posit that waterfowl, including black ducks, may be limited during the non-breeding season by the abundance and quality of food resources. In the Atlantic Flyway, recent research has attempted to address the abundance and quality of food availability and energetic demands of black ducks, but information regarding the metabolizable energy of several important food items is not known. The goal of this project is to estimate the true metabolizable energy of key food items to improve estimates of energetic carrying capacity along the Atlantic Coast during winter.
FY 2010 Progress Report (Coluccy & Yerkes Progress Report 2010.pdf)
FY 2009 Progress Report (Coluccy & Yerkes Progress Report 2009.pdf)
Conroy, M. Technical support for black duck adaptive harvest management.
Goal: The goal of this project was to develop the technical tools, including population model and optimization procedures, to inform the implementation of Adaptive Harvest Management for the American black duck.
Final Report (Conroy Final Report 2010.pdf)
FY 2009 Progress Report (Conroy Progress Report 2009.pdf)
FY 2008 Progress Report (Conroy Progress Report 2008.pdf)
Darveau, M., and L. Imbeau. Effects of wetland landscape configuration, ecological alteration, and other biophysical factors on the abundance of the American black duck in Quebec forest-dominated landscapes.
Goal: Identify local- and landscape-scale features and processes that affect the abundance of the black duck in Quebec forests to inform forest development guidelines and management plans.
"Interpolated densities of American black duck indicated breeding pairs in southern Quebec."
Fronczak, D., R. Raftovich, and J. J. Higgins. Training aid for identification of waterfowl during aerial surveys.
Goal: Aerial surveys during breeding and winter periods provide critical data for the conservation and management of waterfowl species including the black duck. However, there are currently few training aids to prepare new observers or enhance the skills of veteran observers for the difficult task of identifying waterfowl species during from aircraft. The goal of this project is to collect and organize video and still footage from the vantage of survey aircraft (e.g., helicopter and fixed-wing) and develop simulation exercises to help biologists develop the necessary skills to serve as an aerial observer.
Final Report (Fronczak et al Final Report 2008.pdf)
Gray, M. and H. M. Hagy. Habitat use and energetic carrying capacity among managed and unmanaged sites for the American black duck in the interior U.S.
Goal: Estimates of black duck habitat use, quality and energetic carrying capacity are needed for winter black ducks in the Mississippi Flyway to aid in the development of annual life cycles models and habitat management plans. This project will characterize habitat use, quality and impact of land management on black ducks in the primary wintering grounds of the Mississippi Flyway.
Huang, M. Wintering habitat use, survival, and time and energy budgets of American black ducks (Anas rubripes) in Connecticut.
Goal: The goal of this project was to related black duck habitat use, survival, and time and energy budgets to food availability to inform estimates of energetic carrying capacity along the Atlantic Coast.
Link: FY 2010 Final Report (Huang Final Report 2010.pdf)
Link: FY 2009 Progress Report (Huang Progress Report 2009.pdf)