Quick question:
One of the other eggs that had external pipped 28 hours ago began cracking some of the shell (not much) proximal to the external pip bump about 6-7 hours ago, and then stopped. It hasn't made any improvement since, but the egg occasionally rocks. Should I be worried? I've heard that once zipping starts, there shouldn't be much delay, so I'm not sure why this one has done nothing for the past 7 hours.
I've opened the incubator twice to deal with a duckling and humidity, but I've closed it immediately and lockdown conditions were quickly reestablished. Could this have shrinkwrapped the duckling?