This magnificent field guide greatly expands on Butterflies Through Binoculars: The Boston-New York-Washington Region--identified by Defenders of Wildlife Magazine as "the first to focus on netless butterflying" and called " a clear winner" by the Audubon Naturalist. Glassberg here shows ushow to find, identify, and enjoy all of the butterflies native to the eastern half of the United States and southeastern Canada. This guide: *Combines the immediacy and vividness of actual photographs of living butterflies with the traditional field guide format *Emphasizes conservation over collection *Includes 630 color photographs, arranged on 72 color plates, of butterflies in the wild *Provides adjacent color maps that show where each species occurs in a given locality and for how much of the year *Supplies entirely new field marks for butterfly identification *Demonstrates how to identify subjects by way of the key characteristics butterflies are likely to display in their natural settings *Shows how species can be recognized both from above and below *Explains how to differentiate between males and females. For butterfly enthusiasts, for bird watchers who want to add a new dimension to their hobby, for anyone who is simply interested in exploring the wilds of their own back yard, this new field guide offers hours of delightful help and instruction.