All the Birds of North America

All the Birds of North America by Griggs, Jack. paperback edition. ISBN: 9780060527709.

A Surer, Faster, Easier Way to Identify Birds At last, a guide that successfully organizes birds by field-recognizable features for quick identification. For lack of a better method, bird guides have traditionally placed birds in evolutionary sequence, resulting in birdings classic Catch-22 -- you must recognize an unknown bird and know its place in the sequence before you can took it up! All the Birds arranges species by their feeding adaptations -- features that are easily observed. How a bird feeds largely determines its form. Its natures way of organizing species to fit ecological niches. The powerful bills and tree-climbing habits of woodpeckers, for instance, are prominent feeding adaptations. Recognizing birds adaptations for feeding is the natural, no-nonsense way to identify; learn, and understand them.