Evaluations of duck habitat and estimation of duck population sizes with a remote-sensing-bases system /
Cowardin, Lewis M.
Shaffer, Terry L.
Arnold, Phillip M.
U.S. Dept. of the Interior.National Biological Service.
Washington, D.C. : U.S. Department of the Interior, National Biological Service,
1995.
During 1987-90 high-altitude photography, aerial videography, counts, and models to estimate sizes of breeding populations of dabbling ducks and duck production and to identify duck habitat on U.S. fish and Wildlife Service land and easements and on private land in the prairie pothole region of the United States.
During 1987-90 high-altitude photography, aerial videography, counts, and models to estimate sizes of breeding populations of dabbling ducks and duck production and to identify duck habitat on U.S. fish and Wildlife Service land and easements and on private land in the prairie pothole region of the United States.
Ducks
Ducks
Wildlife monitoring
Remote sensing