Did you know that there are more than 175 kinds of chickens? A female chicken can lay more than 300 eggs in a year. Learn more about these fascinating farm animals in Chickens, a Farm Animals book. This is an AV2 media enhanced book. A unique book code printed on page 2 unlocks multimedia content. This book comes alive with video, audio, weblinks, slide shows, activities, hands-on experiments, and much more.