We decided to add two new hens to our existing flock of four. Life has now changed dramatically and we have gone from peace and harmony to all out war. I knew there would be trouble initially and it has begun to calm down a little and no blood has been spilt thank goodness. The main problem is that the two new ones seem to be very good flyers and keep flying over the fence to get away from the others. Should we clip their wings? I really don't want to, but I also don't want them flying away all the time otherwise they will never learn to live with each other. What should we do?