I sidled over to a man in a white Perdue lab coat who had joined us. "Jim," his name tag said. I plied him with questions about how to increase yield and profits. Beyond light, temperature, humidity and feed, what about density of chickens per square foot? What about the effect of the pecking order? Were there chickens that couldn't get enough feed because the alpha chickens pushed them out of the way? (I knew to ask this from raising dogs.) Jim patiently answered my questions. After I had probed him about every possible way that yield could be increased, I hit him with my big question. What about music? Do chickens like music? Stunned silence followed. Then, an answer: No, chickens don't like music. At this point he started looking around for the exit (I've seen this look before), and he suggested I rejoin my group.