This is my first time hatching eggs, so unsure if I should do anything. I've got 7 silkie eggs, and since lockdown have been keeping humidity between 55-65%. The evening of Day 20, the only egg that had pipped hatched and the humidity spiked to 77%. Fast forward 6 hours overnight to day 21 and humidity dropped to 34%. There are no other external pips, but could this sudden drop shrink wrap them? I immediately increased the humidity