I'm 16 and as a reward for finishing my exams I rescued 8 battery hens (who needs flashy jewellery), and despite losing one to illness they are very happy and healthy hens. When we first brought them home there was a little more pecking than usual as they settled in, but it settled to just a little here an there to maintain the pecking order. However recently one hen has begun pecking the others almost continually on their tails. As they are ex battery they have few feathers anyway, so this is causing bleeding on some of the hens. I first thought it may be boredom- the area in the pen is a large former veg plot, which was overgrown, but now is pretty much cleared. Because of this I have made sure that I give them a little something each day- either corn or left over fruit an veg. But I have read that chickens can get bored if they can't scavenge as much? So today I spent the afternoon in then pen, cleaning out the house and laying out snacks- I put a mash of carrots, apples and cabbage into egg boxes, turned them upside down and cut the tops off the individual cups so the hens could find the mash. They devoured it in minutes. They love mash. I also strung up cabbage leaves from various places in the run for them to find. But this one hen was still pecking the others, sometimes quite aggressively. I have separated her now from the rest in a smaller makeshift run, with food and water. She is perfectly happy and healthy, but is there some way I can stop her pecking the others???