Hi there, my chicks are three weeks old now, and I've been letting them outside during the day to enjoy the undeveloped veggie bed area. Unfortunately, I lost one baby chick to a red-tail hawk while I was in the house. So today, I put the chicken wire over the bed instead of around it so they will be protected. This area is only temporary until our coop and run is built. They seem to enjoy being outside a whole lot more than in their large cardboard boxes that they live in at night. I have made the area dig-proof, and I was thinking of putting a large plastic rubbermaid bin in there with some wood shavings for them to sleep in along with two 250 watt lights. I can also cover the chicken that is on top with a canvas tarp. It is supposed to be a low of 45 tonight. What do you think about this. Are the chicks able to handle the cold night air if there is overhead shelter and a couple of lights to keep them warm? I know this area looks terrible, but it is only temporary. Thanks for your help.