Just over a year ago we purchases chick and put them in a separate coop. We had some older chickens in an older coop. We kept the new girls (babies) separate from the older birds because we were afraid the bigger girls would hurt the babies. After four month or so the babies started to die and we were told that they most likely had Merek's. Long story short we lost all but one chicken. Today, she is a beautiful hen. I tried to let her free range with our older girls but they just fight. We would like to purchase some pullets (4 months old) and put them with our lonely hen. Can we do that? If so, how do we put the new pullets (vaccinated for Merek's) with our lonely hen so that they all become friendly? How do you merge two separate flocks? Any help is appreciated! Thanks for reading our thread.