Here is what we built today. It will be in our unheated but not drafty tool shed. We live where we're unlikely to have lows less than 40 until next winter. I have to get these chicks out of our guest bathroom. We had the hardware cloth because we're building a coop/run and we had the tarp laying around. The wood is all from an Ikea loft bed that fell apart (shocking, IKEA falling apart, I know!) when we took it apart to move it. It's 3.5 feet high, 3 feet wide and 5 feet long. It's the door that's stumping me. Anybody have ideas for an easy way to cover that? I could just make a frame, cover it with either hardware cloth or tarp, and attach it with loop and hook latches (has to be possible for my kids to open it) but I was wondering if there was some ninja secret backyard chicken forums brooder door magic. BTW, chickens would try to push open a tarp-only door, right? This doesn't have to be predator-proof (because the shed it's in will be) but just has to keep them in and safe. THANKS!