My chicks are now 4 weeks old and I read that it is time for them to go to the coop. However, it just started getting really cold and I don't feel that would be a good idea. Right now, they are in the brooder in the garage and I took the heat lamp away to see how they would do and all they did was pile up on top of each other. They didn't even wanna move. I am having great anxiety about this. Can anyone help me and tell me what you do. The only way I could get the heat lamp outside would be to run an extension cord and I don't want to do that if I don't have to.