I have 6 chicks that are 7 weeks old. They have been out in the coop for the last 3 weeks with a red lamp on for added warmth. Well it has finally warmed up to where I thought that they don't need the lamp. But this evening they would not go back into the coop. I had to push them into it. Now they are sitting huddled by the pop door sqawking. Should I turn the light back on for comfort they certainly don't need it for warmth. Any Ideas. TIA Erik