Hello, I just had to get rid of my rooster. I adopted 2 new hens. They are about 1 year and my current 2 are about 6 months. I still have them separated but with the coming cold nights is it better to put them together? They have seen each other and kind of argued and they were all pretty upset that night. That was on Sunday. Have they been separated long enough to let them sleep together starting Friday night? I raised my other 3 from chicks and they always got along really well so I just want to make everything as smooth as possible. I would appreciate any help. Also, this winter is it safe to add a light to the coop?