Hi, my name is David and I have 6 new pullets that are sexlinks. They have really grown and I think they are very close to egg laying. They were all hatched and raised together. They have been really tame and they get along with one another well. However, I have noticed that today a few of them have been sparing off at each other. Is that normal, are they going to hurt each other? Thanks for any help you can offer.