I have gotten several fertile eggs this week. They are from one of my leghorns. I have a couple of questions: 1- what are the concerns (if any) with in-breeding - I have 5 hens (2 leghorns, 1 buff, 1 rhode island, 1 barred rock), and a barred rock rooster. 2- I would like to have chicks in the spring, do I simply leave the eggs in the nest, and hope for a hen to sit on them?? Would LOVE feedback!