Enclosed is a copy of “Lamb Production and Survival in Lambing Areas and Summer Ranges of a Bighorn Sheep Population Wintering on Big Creek In Central Idaho.” This report is a summary of my findings from the work that I completed during the summer of 2001 on bighorn sheep (Oviscanadensis Canadensis) in the Frank Church–River of No Return Wilderness. It will aid in the future management of bighorn sheep in Central Idaho and adds new information to the established baseline data of this population. Funding for this report was approved on October 18, 2001 by your department. I completed the report on schedule and met all my proposed objectives within the allotted budget of $5,998. A slightly revised version of this report will also be submitted to Jeff Rholman of the Idaho Department of Fish and Game; Janette Pope of The Charles DeVlieg Foundation; the Dean of the College of Natural Resources at the University of Idaho, Jim and Holly Akenson, Managers of the University of Idaho’s Taylor Ranch; and will be submitted as an output for the fulfillment of my senior thesis requirement under Dr. Lissette Waits and Dr. Jim Peek.