My hens are 9 weeks old. I delayed building my coop because we are moving next week. However, I woke yesterday to a dead hen. I think they were too crowded. Long story short - I've made an emergency, temporary coop today but I'm wondering if they are too young to be outside all night. The coop is 4 sides hardware cloth with chicken wire on top. I put a large Rubbermaid container in there on it's side with sand and bedding in it as a wind break. Where I live, it's suppose to be clear and 59 degrees tonight. Too cold for 9 weeks? Thanks!