So I just candled my BCM eggs last night for the first time, they are so dark I couldn't see anything earlier. I noticed that all of the air cells are small, with one that is very oddly formed on top ans stretching down the side. The rest of the egg was completely dark so I know there are babies in there. What causes this and is there anything I can do at this point to fix it? What can I expect to happen if they stay small, will anybody hatch?