... was on duty one morning when a tourist approached, gave a brief description of an unusual bird he had just seen and asked whether my friend could identify it. "No," my friend replied, "I don't recognize it either, but I can help you. I have here a copy of Roger Tory Peterson's Definitive Field Guide to Western Birds." "That won't help," replied the disappointed tourist. "That bird's not in there." "How do you know," asked the ranger. Came the reply: "I'm ...
