I got 2 white Leghorns, 1 Brahma rooster, 1 red turkin, and 1 Leghorn mix chickens about a month and a half ago that were all getting along fairly well. Then I got 5 rhode island reds mixed with red rock and they are red. I brought them home and put them in with the other chickens in the run about 2 weeks ago. The new chickens seemed to be adapting fairly well and then my 2 white Leghorns and the rooster started trying to keep the new set of chickens at one end of the run. They have never gone into the chicken coop yet and the 2 white Leghorns and rooster are making sure that they don't. They stay huddled on the ground through the night all together in a ball at there end of the run. The new ones are not laying and i think its because they cannot get into the nesting box. Any advice on how to fix this problem if there is one and how to make peace between my chickens so that they will lay will be appreciated. They do get out of the run to free range occasionally and they still stay to there groups and the rooster runs back and forth between the two.