Philadelphia Birds Author:James Kavanagh Philadelphia Birds, An Introduction to Familiar Species in the Metropolitan Area, is a must-have, reference guide for beginners and experts alike. Whether you're on a nature hike or in your own backyard, you'll want to take along a copy of this indispensable guide. The Pocket Naturalist(tm) series is an introduction to common plants and animals... more » and natural phenomena. Each pocket-sized, folding guide highlights up to 150 species and most feature a map highlighting prominent sanctuaries and outstanding natural attractions. Each is laminated for durability.« less