Our chicks are 5 wks old and I have never turned the brooding light off (red). In addition to the red light they get natural light during the day. At night it's just the lamp on. Is this too much light all the time (for now), or should I be getting them used to being in the dark so they could sleep? I noticed that the chicks are progressively getting more and more vocal (especially one of them) and was wondering if it was because they're not getting enough dark time and they're cranky, or is it because they are just getting older and louder? I have kept it on because they need the heat. I have just raised the lamp for the last time today (75 deg.), but have never turned it off.