When hatching a bunch of eggs, I use an incubator. The humidity and temperature must be kept just right and in 17 days, I will have a bunch of baby quail. Baby chickens take 21 days. Your numbers will vary but you will get close to half and half male and female. Of course the females are valuable for laying eggs. While you will need a rooster, most males provide the meat. Fattening them up before butchering makes them nice and plump. For quail, butchering from 6 to 12 weeks produces a broiler. Over 12 weeks produces a stewer. Both are delicious, just cooked differently.