I've read lots of threads and have followed advice from them. My 10 week old chickens are being integrated into my year old flock. I have them being successful together during the day, but I am worried about letting them be together at night. The big girls are still chasing the littles around the pen and pecking at them to make them run. They haven't hurt them and they don't do it all the time. Do you think they are ready to be together in the coop yet? Thanks.