The National Audubon Society Field Guide to North American Birds Eastern Region is a softcover picture book that serves as a reference and birdwatching guide for adults. It has 800 pages and is authored by the National Audubon Society. The book features revised information and covers topics such as animals, birds, and reference. It was published by Knopf in the 1990s and is part of the Bird Field Guide series. The book measures 7.5 inches in length, 4.1 inches in width, and 1.3 inches in height, weighing 19.6 ounces.