1. Caesar Kleberg Wildlife Research Institute; Texas A&M University-Kingsville; 700 University Boulevard, MSC 218 Kingsville TX 78363 USA
2. U.S. Department of Agriculture/Animal and Plant Health Inspection Service/Wildlife Services; National Wildlife Research Center; 4101 LaPorte Avenue Fort Collins CO 80521 USA
3. Kerr Wildlife Management Area; Texas Parks and Wildlife Department; 2625 FM 1340 Hunt TX 78024 USA