This interactive book and audio field guide allows you to press a button and hear the songs of 75 backyard birds that live in Eastern North America. The sounds are recordings by the Cornell Lab of Ornithology. An audio track index and table of contents help you find the song and the bird. As you listen, you can read more about the birds and their songs in the text by author Donald Kroodsma. Dr. Kroodsma is a birdsong expert who has taught for many years at the University of Massachusetts. Beautiful full-color paintings and range maps accompany the text for each bird. A great gift for both adults and children, the book is perfect for beginning birdwatchers.