Did you know that penguins use their bills to spread oil from a gland near their tails? When they preen their feathers, they spread oil on them, which helps keep them warm and waterproof. Learn these and other interesting facts in I Am a Penguin. 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.