Every single night, my chickens are up in the tree. I take them down and put them in their house with a lot of fuss. Would they be ok up there when it's cold and rainy? Would they have the sense to go into their house if they got too cold? I'm not worried about predators. We have never had a problem with that. I can hear them from my bedroom too. I have a separate run and coop for my silkies and cochins. They definately get put to bed at night. The big girls insist on the tree.