The Audubon Society Field Guide to North American Birds: Western Region, authored by Miklos D.F. Udvardy, is a comprehensive guide focusing on the birds of the Western region of North America. Published in 1977, this book provides detailed information in English about various bird species found in the western part of the continent. Covering a wide range of topics related to birds and their habitats, this book is a valuable resource for bird enthusiasts, naturalists, and anyone interested in the wildlife of the Western region.