A couple of months ago now I added 5 new pullets to my flock of 4 hens. They were a little smaller at the time but have now grown to roughly the same size as the older birds. When I let them out on a morning, all of them go for the feeder but after a few seconds the older ones go for the new girls and they are scared away. Sometimes they go back but sometimes they stay away. When I get home from work I find that the new girls have gone back inside and are on their perches, presumably because they know they are safer there. It is nothing too bad but I had expected the pecking and chasing to have stopped after a few weeks. When I can I stay outside to make sure they stay out and get food and water. I have thought about locking them outside to force them to get along but it would have to be after everyone has laid and I am at work by that time.