oh I also would love to hatch blue slates! they are gorgous! sometime I will be able to buy some eggs!!That's great. Incubating can get really addicting. It's a lot of fun you will enjoy it. I have 25 eggs ISA brown 2nd generation left in incubator right now. On day 8. This is my first time collecting and incubating from these 26 chickens and 1 Roo. I started with 27 thinking maybe 50% fertility surprisingly all were fertile. I lost 1 within first day and 1 at day six because of some temp flux. But so far doing better than I thought. Want to see what these guys come out looking like since they won t be true to their breed and what their laying will be like before I start selling them. Their parents are great birds I get 25 eggs a day out of 26 hens and they are super friendly. Next I ll be trying to hatch some blue slate turkey eggs.