I have two cochin chicks that are about 8 weeks. They have been in a crate on my kitchen table and lets just say I am ready for them to be out- but don't want to risk their health. I put them out this afternoon in the set up pictured below. It was 56 and sunny. now obviously it isn't sunny anymore and the weather is to be 48 overnight and rain in the early am-5 to 7 to be exact. Is this too cold to leave them out? At what temps can I leave them out and be likely safe>? I realize there is no hard and fast number but I have no clue- first time with chicks. thanks