I have had 3 Easter Egger chickens for 5 months. We decided to get 3 new chickens almost a week ago. The first 2 days, we took the new chickens and put them in a chicken tractor next to the chicken run where our chickens stay. Then for 3 days, we put the new chickens inside the run inside an EX-LARGE dog. Today, we let them inside the chicken run/coop (run is 12 x 8). My original chickens won't let them eat or drink. They chase and peck them and pull out feathers. Will this most likely improve or not? Note: One of the new chickens is the same size as my original chickens and the other 2 are a little smaller and younger.