Questions about common North American birds are appealingly answered in this browsing title for nature enthusiasts. How does the sparrow sing two notes at the same time? How do birds navigate when migrating at night? Why doesn't a bird fall off his perch when he falls asleep? How can a duck stand in icy water all day without suffering frostbite? These and 50 other questions are answered, each on a single page with accompanying detailed line drawings. The quirky contents notes provide a come-on: ""Disposable diapers,"" ""Look before you eat,"" ""Jail break."" A useful title for increasing awareness and appreciation of the common birds around us. Index.