We are newbies to raising chickens (and to living in Brazil!). I've done some research here and noticed that many people are breeding for show, etc. We have no interest in showing. Our goal is to simply keep the bugs and termites under control (serious bug issues here!). We have what are called "caipira" chickens which are like the "back country" breed found on ranches (we live in the central highlands). Last November, we started with a male and 3 females which were probably related, but we're not at all sure. These girls quickly had 3 daughters and a rooster and then another flock of 8 that we are still a little unsure of the sex. The first "son" and his dad mount every gal in site. From these mounts on the original 3 daughters and mothers, we now have like 25 new chicks (and we really tried to find and eat as many eggs as we could!). We recently got a new rooster from a completely different flock. He looks very different and may even be a slightly different "breed". I at first thought bringing in some genetic diversity was a good thing, but after reading posts here, I'm not so sure. All of our birds have so far seemed very healthy, even though there has definitely been some inbreeding. Any suggestions? Should I be concerned about introducing a new rooster? (He keeps to himself and there has been no fighting with the other males, but he is also younger).