1. U.S. Geological Survey, Eastern Ecological Science Center, Laurel, Maryland, USA
2. National Museum of Natural History, MRC-116, Smithsonian Institution, Washington, D.C., USA
3. Cornell Laboratory of Ornithology, Ithaca, New York, USA
4. Department of Biology, San Diego State University, San Diego, California, USA
5. Museum of Vertebrate Zoology, University of California, Berkeley, California, USA
6. 24 Idaho Street, Bishop, California, USA
7. Departamento de Biología Evolutiva, Facultad de Ciencias, Museo de Zoología, Universidad Nacional Autónoma de México, Ciudad de México, México
8. Florida Museum of Natural History, University of Florida, Gainesville, Florida, USA
9. Museum of Natural Science and Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana, USA
10. Michigan State University Museum and Department of Integrative Biology, East Lansing, Michigan, USA
11. Science & Education, Field Museum of Natural History, Chicago, Illinois, USA
12. University of Alaska Museum, Fairbanks, Alaska, USA