It finally happened! I heard one of my piggies chirping! It happened about 5:30am and the ceiling fan started to make a weird whistling sound. That scared the piggies-I heard them run into hidey houses. The weird noise only lasted about 2 minutes, on and off-then stopped. Next thing I knew, I heard one of them (i'm pretty sure it was Luna) chirping. It lasted for about 30 seconds, then stopped. I was only half awake, waiting for the alarm to go off. I thought to myself "I must be hallucinating"...LOL. I heard clips of chirping and never imagined I'd hear one of my piggies doing it. It was one of THE coolest things!