Conservationists across North America are working to help protect and support bluebirds, and you can do your part by creating a bluebird trail. This is simply a series of nesting boxes (anywhere from a few to a few thousand) set about 300 feet apart along a prescribed route. Dale Gelfand tells you what you need to know about bluebirds and their habits, and she shows you how to create and monitor an effective bluebird trail with well-designed nesting boxes.