We have hens that are just about to start laying but they refuse to go in the coop to roost. They've got no issue going in to eat and drink but at night they bunch up in a corner of the run. We've already lost three to predators. I got an older hen from some friends in hopes that she would teach them, introduced her at night but the next day the others just pecked and attacked her. It's been three days and they won't let her out into the run. Any advice is appreciated