No you should definitely raise them outside but make sure you just dont plop them in the coop. Their very young and like nat said the sudden change of temp should be slowly introduced. You also may need to watch more closely to insure their not picking up germs or something (if there is any) if that makes sense.No I do not have a hen to put with them. I just read 2 different articles on here about raising them outside. They didn't have hens. It is just a thought.