Christine A. Mitchell,¹ Donald H. White,² Elizabeth J. Kolbe,³ Ronald C. Biever<sup>4

1</sup>U.S. Fish and Wildlife Service, Patuxent Wildlife Research Center, P.O. Box 2506, Victoria, Texas 77902, USA
²U.S. Fish and Wildlife Service, Patuxent Wildlife Research Center, School of Forest Resources, University of Georgia, Athens, Georgia 30602, USA
³U.S. Fish and Wildlife Service, Patuxent Wildlife Research Center, Laurel, Maryland 20708, USA
⁴Texas Parks and Wildlife Department, 1601 E. Crest Drive, Waco, Texas 76705, USA