Day 22 can hear chirping inside egg how long until hatch happens

[Pollmadoll]

I have two serama silkie eggs that should have hatched yesterday . Left them until this evening and could hear chirping and saw one has internally pipped . How long until they start to hatch?

 

[Pollmadoll]

What is the correct humidity needed to hatch . Is it 60. %

 

[oregonkat]

Humidity at 60% should be OK .. it can take a day or more for hatch to complete from pip to zip. Keep an eye on them and see when the external pip takes place. From that point it can be a while for the zip to happen. Once the zip is in process it should go quite quickly and should be done in an hour or so. Make sure the membrane stays white during the zip, if it starts to go yellow/brown you may need to moisten it with some coconut oil or neosporin to help the chick bust out. Maintain a nice high humidity. Good luck.