What do a penguin, a pigeon, and a peacock have in common? They?re all birds! But do you know what makes a bird a bird? Read this book to find out! Learn all about reptiles, insects, mammals, and other animal groups in the Meet the Animal Groups series - part of the Lightning Bolt BooksTM collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt BooksTM bring nonfiction topics to life!