This new series is based on the Peterson Identification System, which uses life-like illustrations to help young naturalists make accurate identifications. The design of each book is straightforward, simple, friendly, and easy to use -- ensuring the success of beginners. Each of the four new titles in the series (SONGBIRDS, WILDFLOWERS, CATERPILLARS, and BUTTERFLIES) features vibrant color photographs of North American plants, birds, and insects in their natural habitats.