If you stand at the edge of the Big Woods after dark and listen, you would hear many strange sounds. Not everything goes to sleep after the sun goes down! Many animals live most of their busy lives in the hours of darkness. At night flying squirrels wake up, bats and owls flutter and fly about, at various times katydids, tree toads, and peepers are heard, whippoorwills whistle, beavers swim out of their houses, field mice wait and listen...