1. S.T. Klimas, J.M. Osborn, A.P. Yetter, A.M.V. Fournier Frank C. Bellrose Waterfowl Research Center, Forbes Biological Station, Illinois Natural History Survey, Havana, Illinois 62644Present address of S.T. Klimas: Illinois Department of Natural Resources, 238 State Route 26, Lacon, Illinois 61540
2. J.D. Lancaster Gulf Coast Joint Venture, Ducks Unlimited Inc., 700 Cajundome Blvd, Lafayette, Louisiana 70506
3. C.N. Jacques Western Illinois University, Department of Biological Sciences, 1 University Circle, Macomb, Illinois 61455Present address: Illinois Department of Natural Resources, 8542 N Lake Road, Lena, Illinois 61048
4. H.M. Hagy U.S. Fish and Wildlife Service, National Wildlife Refuge System, Stanton, Tennessee 38069