I've had Bunny, Martha, and June now for about a week - and I've had them underneath a heat lamp the entire time, turning it off during the warmest part of the day (today is supposed to be 80!) Practically the entire time they huddle up as far away as they can get from the light, and act fairly lethargic. BUT when I do turn it off for an hour or so, they hop up and start peeping and running around - scratching, pecking, and drinking like happy little chicks. Can I completely remove the heat lamp? Or should I just raise it up REALLY high?