Beautiful Birds A LESSON IN DIVERSITY
Among living creatures, birds are the poster animal for diversity with almost 10,000 different species. All birds have feathers and beaks, but they lay eggs like reptiles and are warm-blooded like mammals. Some birds fly, and others walk, run, or even swim. Every kind of bird is different in size and color, diet, and breeding habits. Birds also live on every continent. Recently, scientists have studied fossils, living birds, and bird
