i had 5 hens and introduced 2 new ones...they're all pretty young - around 16 weeks or so, the 2 new ones might be a month younger. the two groups do NOT get along but at least they were all going into the coop together at night. now all the big girls are sleeping on a perch outside in the run while the 2 younger/new ones sleep in the coop (i keep the door between the coop and the enclosed run open in the warm weather so i don't have to let them out in the morning). the big ones haven't slept in the coop for well over a week. what's going on? will they go back in when it gets cold enough? i though they all would be getting along by now...