Our chicks are about 21 days old (some older). They look like they have most of their wing feathers. They are getting crowded in the tupperware box that they are in, and every time we take the gate off the top to change the water or food, they try and jump out. Anyway, the coop is done is it too soon to put them in there with the heat lamp? Our nights are in the high 40's with day temp ranging in the 70's. Also, should I put shavings or hay in the coop? And how thick? Here is a picture of "cluck cluck" my DD named her. Whenever we come out "she"(do you think she is going to be she?) jumps on the water and sticks her head up through the baby gate to say "HI".