1. School of Natural Resources University of Nebraska Lincoln Nebraska 68583 USA
2. La Kretz Center for California Conservation Science Institute of the Environment and Sustainability University of California Los Angeles California 90095 USA
3. Karen C. Drayer Wildlife Health Center School of Veterinary Medicine University of California Davis California 95616 USA
4. National Park Service Santa Monica Mountains National Recreation Area Thousand Oaks California 91360 USA
5. School of Forestry Northern Arizona University Flagstaff Arizona 86011 USA
6. Department of Veterinary Sciences University of Wyoming Laramie Wyoming 82070 USA