All the Birds in the World by David Opie

"What makes a bird? All birds have feathers, wings, and beaks. But birds come in many colors, shapes, and sizes. There are over 10,000 types of birds and they differ widely in everything from their habits to their homes. And yet, despite this diverse tapestry of textures, sounds, and sights, they are all part of the same enormous family. Even the little kiwi bird- who struggles to see at first how he fits in- finds that he too belongs to this fascinating family of feathered friends."