I have 34 button quail aged 2 1/2 weeks. At what age can they be accurately sexed and separated into pairs? I understand these birds do not live in groups or coveys. There is minimal squabbling at this time but there is some pecking and other shows of dominance. They are getting used to drinking from a nipple waterer and eating game bird food. Millet sprays every couple of days. Can I use DE in their bedding? Thanks you guys!