I just went and turned my 9 runner eggs for the last time, before leaving them alone to hatch. I heard a little chirp. I thought that it was my imagination at first, but when I turned one egg, then I felt the pip. I know that ducks need more humidity to hatch, but I just filled the water other water container up. What are the effects of hatching too early? They are not due to hatch until Sunday. My temp. has been good throughout the entire incubation. What would make them hatch so early? Yes, I am very excited, but I am also worried.