Hi, I have three different ages of chicks - 10 days old, 2 weeks old, and almost 3 weeks old. It is a cool spring here in Nova Scotia - no frosts, but cool nightly temps of about 43F at the lowest. Can I put my chicks (37 in total) into my chicken coop with a heat lamp? I'm pretty sure I can, but I wanted to get a second opinion. I will put some deep litter (wood chips) in the coop, and line the bottom foot or so of the walls with cardboard for insulation. Your opinion is appreciated!