A person called my work saying that she noticed that the duck she normally saw in her tree trunk was missing, and had eggs that she was sitting on. So, I went and collected the eggs and put them in my incubator. They're doing well, I can see movement and they seem to be developing. The only problem is that I don't know when they're due to hatch. How bad is it if I leave them in the turner too long? Should I take them out and just turn by hand from now on?