I love this group! You always have the answer, so here goes; I have a variety of hens about half are bantams and half are standards. I recently hired a petting zoo where they brought a bunch of little bantams for the kids to play with. My son fell in love with a little barred leghorn boy and the people who brought them gave him to my son. We integrated him into the flock and he's done just fine. Yesterday a neighbor called and told me that she needs to regime her three. She has a black sex link female, a production red female and an unknown rooster. I've been around all of them (as have my kids) and they're all really nice birds.....so here's the question. Can I add her three to my flock? The total would be 15 hens and two roosters. Are the roosters going to kill each other? Is there a way to prevent that from happening? Is there anyway to know for sure? Thanks! My current flock are all really young - the girls aren't yet laying, the new flock are more mature if that makes a difference.