Backyard Birdwatching in Philadelphia (All About Birds Pocket Guide®)
Backyard Birdwatching in Philadelphia: An Introduction to Birding and Common Backyard Birds of Eastern Pennsylvania (All About Birds Pocket Guide®)
Produced in collaboration with the Cornell Lab of Ornithology, this full-color pocket guide features how-to essentials for backyard birders along with clear, easy to understand identifications. The lightweight, water-resistant folding format is perfect for use near the home or in the field. From Waterford Press.