How Birds Work: An Illustrated Guide to the Wonders of Form and Function - from Bones to Beak

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 b...