That is really good to now, it is weird that they can peep before they internally pip. As for temp it has been consitently 99.2-99.6 % throughout incubation. Humidity was at 45-50% and I upped it to 60 during lockdown. I'm supposing it would be a bad idea to candle eggs at this stage?
I had put my chicken eggs into lockdown and everything was going good (In a forced air incubator), then on the 19th day I heard chirping coming from the incubator but no obvious external pips so I assumed it internally pipped. I read that it can take hours from there for the chick to externally...