1. 1816 Clare Drive, Alice, TX 78332 USA
2. 32301 South Whitehouse Circle, Harlingen, TX 78550 USA
3. US Fish and Wildlife Service, Division of Migratory Bird Management, National Raptor Program, 2105 Osuna NE, Albuquerque, NM 87113 USA
4. Unity College, Silver City, NM 88061 USA
5. Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX 78539 USA