I just got five "pullets" from a friend of a friend last week. The chicks are from the hens on her farm, she and told me what breeds they were (2 barred rocks, 1 Delaware, 1 Rhode Island Red and one black star). After thinking about this, i realized that she just had one rooster, so I assume that they are not really full breeds. I have never been a pure bred person, but I wonder if this will affect their egg laying, disposition or trying to distinguish hen from rooster. On that note, she assured me that she thought they were all hens, but that i could exchange them if not. If they turn out to be roos, will it totally disrupt the group if I return it and bring in another hen? Thanks in advance for any help!