I've been trying to read up on adding chickens to my "flock" and haven't seen exactly what I'm looking for. I put "flock" in quotations because I have only 4...3 barred rock and 1 dominique that were raised together, all hens. Is just 4 a flock? lol... They will be a year old April 1. I've loved them...great layers, and have seemed to tolerate Utah winters pretty well. I haven't noticed any fighting or even much of a pecking order. Good girls! In my area, I'm allowed to have 6 total, so I'd like to add two more. I've heard that RIR's do well in my area, cold resistant and good layers. That's sort of my criteria, I guess. Does it matter if I add a different breed? I wouldn't mind getting more of what I have since they've been so good, but I thought it might be "fun" to have some different ones. I've read about folks just plopping them in, and others who have them in a run next to the others to get used to each other through the chicken wire, and others who put the chicken on the roost at night so they wake up together. Are there less issues when there isn't a rooster? At the moment I don't have a run, just a fenced yard. We're planning a run later this year. Should I wait till I have the run in place before getting the 2 new ladies? Would it be easier or worse if I get pullets vs. 1 year olds? Pros and cons? Thanks so much.