Owls are known for their haunting calls; yet when they are hunting, they can swoop down and snatch prey without making a sound. There are about 140 different kinds of owls, and they live on every continent except Antarctica. From the smallest, the elf owl, to the largest, the great gray owl, here is information about the 21 types that are believed to be living in North America. From egg to owlet to fierce bird of prey, this book offers an insightful look at these impressive creatures of the night.