Why are owls' eyes so big? When do owls sleep? Why do they hoot? How many kinds are there? Why do horned owls have horns? These are just a few of the 20 things you will learn about in . You'll understand how owls save us money and that baby owls look like cotton balls. And you'll make a fun owl from a paper bag and some leaves. < < Previous in series Next in series > > See all of the books in this series