You can keep 1 adult coturnix per square foot. For eggs it doesn't really matter how much space they have as long as the temp and humidity is constant. Plus some air circulation. Chick like to be near each other so a large tote bin is good. You can use a light bulb to give them heat but I...
one my quails got a lame leg and i had to kill it. My aunt plucked of all it feathers and cleaned it for me though. Does killing quails get any easier?