I have one roo, and have kept 3 of his recent babies. 2 are pullets (as far as I can tell so far) and on is a cockerel (same as before). My questions are: 1. Can a roo mate with his offspring with no consequesnces? 2. Can a hen mate with her offspring? I know they CAN, but would it be bad? 3. Can half/full brothers and sisters mate? 4. What are the possible health issues with first generation inbreediing? 5. When would it be best to swap out an old roo for a new one to keep the inbreeding down? I do not have a huge operation, just enjoy hatching birds, raising them and selling some. This is my first experience breeding and returning chicks to the flock. Most of my birds are different breeds, so the offspring are mutts. I'm not trying to sell purebreds for showiing or anything. Thanks for your knowledge and information.