1. James C. Kennedy Waterfowl and Wetlands Conservation Center, Belle W. Baruch Institute of Coastal Ecology and Forest Science, Clemson University, PO Box 596, Georgetown, South Carolina 29442, USA
2. Department of Biological Sciences, Clemson University, 130 Delta Epsilon Court, Clemson, South Carolina 29634, USA
3. Department of Entomology and Wildlife Ecology, University of Delaware, 531 South College Avenue, Newark, Delaware 19716, USA
4. Nemours Wildlife Foundation, 161 Nemours Plantation Drive, Yemassee, South Carolina 29945, USA
5. Department of Forestry and Environmental Conservation, Clemson University, 231 Lehotsky Hall, Clemson, South Carolina 29634, USA