They are already laying eggs. They are a few different colors. We purchased eggs, bought 48 expecting a low hatch, and ended up with 25 hatching out. We are interessted in similar infromation as you request. The most frequently quoted fact is that males are inclined to duke it out with the loser dying.
Hens are poor egg sitters.
If kept in a relatively quiet location with enough cover some hens will build a nest and set eggs. If eggs are dropped anywhere they won't sit them. The quail are best set up with one male and a couple females, but if always raised together males can be kept together in a group. I will look in my files to see if I kept record of the better quail sites. Acadiana Avaries, Franklin, LA has good notes on behavior of button quail.