1. Department of Ecology & Evolution, Stony Brook; Stony Brook NY 11794 USA
2. Department of Biology; University of New Mexico; Albuquerque NM 87131 USA
3. Department of Ecology & Evolution; Stony Brook; Stony Brook NY 11794 USA
4. New Mexico Department of Game and Fish; Santa Fe NM 87507 USA
5. Sevilleta National Wildlife Refuge; Socorro NM 87801 USA
6. School of Life Sciences; Arizona State University; Tempe AZ 85287 USA