We had three guinea eggs in the incubator, two died at day 7 the other died on hatch day. I found this out through an eggtopsy, it looked normal to me except there was this brown goop on it. What are a few reasons why it wouldn't have hatched? I am trying to get the hang of incubating and doing the trial and error thing...Trying to hatch and writing down any notes possible, this is the closest I have ever been to hatching so I was really upset about this..Any note will help.