One of my hens went broody. We don't have a rooster so I bought some fertilized eggs for her to sit on and try to hatch. 3 eggs have gone missing. Yesterday at Day 18 I found a dead chick and half the shell in the waterer. What happened? Also, should/can I move her? She is up fairly high in one of our nesting boxes. She is now sitting on 6 fertilized eggs. First timer. Any tips and help are appreciated, but please be kind to this newbie.