This article appears in the December, 2009 issue of Journal of Mammalogy Published by the American Society of Mammalogists. The full article can be downloaded by clicking on the link at the bottom of this page.
Paul M. Cryan: United States Geological Survey, Fort Collins Science Center, Fort Collins, CO 80526, USA (email@example.com )
Robert M. R. Barclay: University of Calgary, Department of Biological Sciences, Calgary, Alberta T2N 1N4, Canada
Special Feature Editor was Barbara H. Blake.