I have to be careful here in the desert. Last year I lost my favorite light brahma/americana hen when her plastic nest box tipped over and she baked to death before I noticed. I was soo upset. I'm now using cat litter boxes with vents and huge rocks in the back of the to stabilise them. My new nest boxes are made of wood with hardware clothe vents in the side. I'm also transitioning into lighter weight hens that tolerate the heat better.
Barb
Barb