I picked up 4 one-week chicks this past Friday - 2 rhode island reds and 2 buff orpingtons - from our local feed store. I'm interested in ordering some different breeds but they aren't available for a few months. How will my 4 react to having new friends in their coop? We have a fairly large coop, outdoor run for them and a large yard for them to be in supervised. Will the older ones be nice? This is my first venture into chickens so I am a complete newb.