A guide to the distribution and abundance of birds that winter in Oregon, Washington, Idaho, and southern British Columbia. It offers a summary of winter status and distribution information for the nearly 380 regularly occurring species in the region. Detailed winter range maps and 30-year population trend data are provided for many of the species. In addition, the book includes suggestions as to the best winter birding sites in the Pacific Northwest and photographs of the region's most unusual winter birds. Range maps and illustrations. 264 pp.