Hatched 5 Baby Button Quails Today!

[TheWeeBee]

Very sweet pictures

I love seeing BQ mum and dads, and their little wee wee babies running around

 

[GrandmaBird]

The Chinese Blue Breasted Quail, buttons, are not pure anymore and so you get varied colors form each pair, the reason for different colored chicks. You do have a silver male and the female is a regular Blue Breasted.
About separation, I would watch the adult birds and see when they start chasing the chicks, but I think it should be about 5-6 weeks or just before they become ready to mate/pair up. At that time I would place the chicks in a cage alone for 2-3 more weeks and then begin to pair them up or sell them off. Good luck