how long cockatiel sit on eggs
Shown is what can also be the downside of this. A cockatiel hen will lay 1 egg every other day. The egg will hatch between 17-21 days. If the environment is warm the egg can hatch a day or two earlier (16-17 days) and if the environment is cool it can delay a hatch by a day or two (19-21 days). The average hatch time is 18 days. Below is a chart you can print out and use for as a guide for the Estimated hatch date.