We haven't actually incubated any eggs, we've had hens to do that for us. The second generation of chicks has just been born on our farm. You may recall that the rooster who sired the first batch, Fancy, was grabbed by a coyote last year. Our new guy, Spike, is doing us proud. But here's a question: Do we need to be concerned about Spike fertilizing his daughter's eggs? Do the same problems of inbreeding arise among chickens as are seen among mammals? If we want to keep raising chickens au naturel, will we need to re-home Spike and get another rooster?