As the others said, it varies. Some hatches seem really quick, there's no visible/audible action going on, you come back an hour later and there's babies everywhere. Some are slow and take longer than a day. The best hatch I had I was away from the house at an obligation for a few hours and came back and almost all the viable eggs had hatched.How long from pip to zip typically? He’s chirping away in there, hopefully any other chickies get the memo lol