Mountain sheep;: A study in behavior and evolution (Wildlife behavior and ecology)

Valerius Geist is professor emeritus of environmental sciences at the University of Calgary in Alberta, Canada Michael H. Francis has spent the past 30 years living in Montana. His photography has been published by the National Geographic Society, The Audubon Society, The National Wildlife Federation, and Deer and Deer Hunting, Field and Stream show more and Outdoor Life magazines, among others show less