I have a small backyard chicken flock. I have not bought chicks in about 5 years. I have been hatching replacements when needed. My flock is healthy. My question is: Should I buy a new rooster to avoid inbreeding? Also, if I should, how often should I replace the rooster? I have had chickens most of my life and just always ended up adding a new rooster when the kids were in 4H as they added to their show birds. But that time is long over and I don't seek out new chickens. Should I add new blood or does it matter?