Hi I'm new here, and I have I'm having an issue. I have chicken eggs that have been in the incubator for nine days now, yet they appear to be somewhere around 17-19 days of incubation. They are almost completely black on the inside and only some thicker veins are visible, and those veins that do appear also appear to be black. The only other thing visible inside the egg -besides the few veins that are visible- is the air sac. What should I do? I don't know when to stop turning them due to the fact that the seem way more developed than the usual. I also know that they are developing fast because they also show shadows in odd shapes. A few eggs did not only appear black, but they also had weird bumps and dents in the form of the black part which I believe is the shadow of the chick. Any ideas on when I should stop turning the eggs, or how to know if they have an issue or not? Please let me know ASAP. Thanks.