So last night, my mother had a total lapse of judgement and decided to put all of our eleven three-week-old chicks in the coop to get them out of the house; considering brooding them inside was an absolute nightmare. So she sticks them out there the whole night; it's their first time in the coop at all and it's not too predator-proof. So she let both big dogs in there too to fend off unwanted visitors. They didn't have a light, no heat lamp, nothing except for food and water. And after she told me all of this, I expected to find them all frozen to death or something since the temperature last night was under 20 degrees. The strangest thing being that they were all running around happily, drinking and eating normally and didn't look cold at all. I know I need to put a light in anyways- and there's no moving them back to the house, due to a lack of space. Do they need a heat lamp? My fear is that they might not survive another night without it. The problem being that I have no place to hang it in the coop.