We currently only have 2 RIRs that are about a year old. We are going to get 4 chicks this spring and I'm looking for advice on getting different breeds. We live in northern Illinois so we need cold weather breeds. We are looking at Black Australorps, Dominiques, Silver Laced Wyandottes and Easter Eggers. Is it okay to get one of each of those breeds or is it better to pair to chicks of the same breed? Also, will these breeds do well with each other and with our RIRs?