LITERATURE CITED
- Bishop , R. A. and Barrett , R. 1970 . Use of Artificial Nest Baskets by Mallards. J. Wildl. Manage. 34 734 – 738 .
- Bossenmaier , E. F. 1964 . “ Cows and Cutter Bars ” . In Waterfowl Tomorrow Edited by: Linduska , J. P. 627 – 634 . U.S. Dept. of the Interior. . Pages in
- Erickson , R. C. 1964 . “ Planting and Misplanting ” . In Waterfowl Tomorrow Edited by: Linduska , J. P. 579 – 592 . U.S. of the Interior . Pages in
- Kjrapu , G. L. 1972 . Feeding Ecology of the Pintial (Anas Acuta) in North Dakota. Ph.D. Thesis, Iowa State Univ., Ames 88
- Loughrey , A. G. 1975 . CWS Waterfowl and Wetland Policy. Proc. 1st. International Waterfowl Symposium, St. Louis, Mo., Feb. 4–6 224
- Lumsden , H. G. 1977 . Canada Goose Research Programs In Ontario President and Future. Proc. Canada Goose Workshop London, Ontario. Ont. Min. Nat. Res. Pub 17 – 37 .
- McKnight , D. E. 1969 . Waterfowl Production on a Spring-fed Salt Marsh in Utah. Ph.D. Thesis, Utah State Univ., Logan 135
- Sugden , L. G. 1969 . Foods, Food Selection and Energy Requirements of Wild Ducklings in Southern Alberta. Ph.D. Thesis. Utah State Univ., Logan 171
- Swanson , G. A. and Meyer , M. I. 1973 . The Role of Invertebrates in the Feeding Ecology of Anatidae During the Breeding Season. The Waterfowl Habitat Management Symposium, Moncton, N.B. July 30 - August 1, 1973 143 – 178 .
- Weller , M. W. 1978 . Management of Freshwater Marshes for Wildlife. Pages 267–284 in Freshwater Wetlands. Ecological Processes and Management Potential New York : Academic Press .
- Whitman , W. R. 1973 . Controlled Water Level Impoundments for Waterfowl. The Waterfowl Habitat Management Symposium, Moncton, N.B., July 30 - August 1, 1973 201 – 207 .
- Whitman , W. R. 1976 . Impoundments for Waterfowl. Can. Wildl. Serv. Occasional Paper. 22 22