Engineered by evolution to thrive in the wild A tiny textbook to learn on your own How Birds Work goes beyond the typical field guide to show us not only what birds look like but why. Why do many owls have asymmetrical ear openings Hint It helps them pinpoint prey see page 40. And why does the Grey Heron rest on one leg at a time Hint Not because its tired see page 66 Birds boast a spectacular array of adaptations suited to their incredibly diverse diets and habitats. In this indepth handbook discover the ways theyre even more astounding than you knowinside and out. Detailed analysis and illustrations illuminate SkeletonMusclesCirculationDigestionRespirationReproductionFeathersColors and PatternsAnd much much more show more