1. New Mexico State University, Department of Fish, Wildlife and Conservation Ecology, 2980 South Espiña, Knox Hall 132, Las Cruces, NM 88003 (TJW)
2. United States Geological Survey, New Mexico Cooperative Fish and Wildlife Research Unit, New Mexico State University, Department of Fish Wildlife and Conservation Ecology, 2980 South Espiña, Knox Hall 132, Las Cruces, NM 88003 (CAC)