It is supposed to get down to 18 degrees tonight. I have 20 one week old chicks. They are out in the coop with a red 250 watt heat light on them at all times. It is about 2 feet off the ground. It hasn't been this cold out at night -- tonight is the only night that's supposed to be this chilly. Would you put them in a box or bin with the light on them (kinda hold in the heat) as they are in a brooder area, but it is 3x5 and there is chicken wire separating them from my regular laying flock -- so trying to say that it is open aired. I just went in there and they were not all huddled together or anything and they were not right under the light -- kinda on the outskirts. It is currently 25 degrees out, but warmer in the coop. I just don't want to overheat them, either, by putting them in a more confined space (box or bin). What do you think?