Omnibird: An Avian Investigator’s Handbook

Using the idea of an “omnibird,” this handbook provides clues for investigating birds. It explains shared features such as hatching from eggs, feathers, two legs, beaks, and gizzards, then applies them to eighteen common birds from habitats around the world. Readers encounter eagles, owls, seabirds, starlings, ducks, and swans while examining bones, gizzard stones, calls, droppings, feathers, flight patterns, nesting, and behavior.