In 1983, Mike O'Connor opened the Bird Watcher's General Store on Cape Cod, which might well have been the first store devoted solely to birding in the United States. Since that time he has answered thousands of questions about birds, both at his store and while walking down the aisles of the supermarket. The questions have ranged from inquiries about individual species ("Are flamingos really real?") to what and when to feed birds ("Should I bring...