Download or read book National Geographic Bird Coloration written by Geoffrey Edward Hill and published by National Geographic Books. This book was released on 2010 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why is a cardinal red and a bluebird blue? How has color camouflage evolved? These are just a few of the fascinating questions explored in this work on coloration and plumage, and their key role in avian life. 200 full-color photos.