I have a new young year old hen and right now she is in a dog cage butted up against the old hen I have in another cage. I wanted to introduce them to each other. the old hen acts like she is going to kill the new one. I am so scared to put them together in the big hen house. I am needing advice on what or how to do it. Plus once they live through the night without killing each other if I let the new one out the next day (they free range all day in the yard) how do I get the new one to know to come back to the big hen house at the end of the day. The older hen doesn't want anything to do with her. Will she just follow the older one? I don't want her to run away. Please offer some advice. I swear the older hen is going to kill her. Please help.