I copied this off of gamebird.com
Incubation for button quail takes roughly 16 days, although we have had reports of a little slower hatch of up to 18 days. We suspect that is due to the varied temperatures and movement during transportation, or perhaps due to the variance in incubator temperatures, humidity, and elevation changes. At any rate, patience in waiting a few extra days has paid off more often than not. Ideal incubation takes place at a steady 99.5 to 99.9 degrees F. with a relative humidity of 60% (wet bulb reading of 86º F).
A good hatch depends on how well you know your incubator. For the first 14 days the button quail eggs should be turned (better described as being rotated from one side to the other) at least twice a day. Three or four times a day is better. If you have an automatic turner in your incubator, it will handle that for you. Most incubators rotate the eggs every four hours, but that may vary. On the fourteenth day, the eggs should be removed from their racks and placed in the hatching tray. At this point, it is best to no longer turn them, because the quail chick is positioning itself to first pip (break a tiny hole in the shell) then emerge.
Good luck !!
Julie
