I have 8 eggs in the incubator. (Pekin and Khaki eggs) 6 were set on February 8th and 2 were set on the 10th. It's day 22 for the 6 eggs and one has ALREADY internally pipped, on day 21! I candled yesterday, and the duckling is tapping the egg, and I can hear it peeping. The temp is good, and I was finally able to get the humidity up to try to keep them from shrink-wrapping. What could be going on with this early bird??