BRIAN R. CHAPMAN retired as a senior research scientist at the Texas Research Institute for Environmental Sciences at Sam Houston State University. He is coauthor, with Eric G. Bolen, of The Natural History of Texas. He resides in Huntsville. ERIC G. BOLEN is a respected wildlife biologist and has edited or coauthored several books on wildlife biology and ecology, including Ecology of North America and Wildlife Ecology and Management. He resides in Wilmington, NC.