This is my first time hatching eggs. I set them the 23rd. This is what I am supposed to see in the eggs right? Also, I have 3 eggs in my incubator, and 8 under my broody. I think I have a BO who is going broody. Can I split the eggs so they each have some or does she need to set 21 days? I just got a roo yesterday, how long will it take me to get fertile eggs for her from my hens? Thanks!