It is really hard to tell by looking...if they are under 6-8 weeks. try this link to see if you can vent check them and separate them as you do:
http://www.stellar-gamebirds.com/Button-Quail-Information.html
scroll to the bottom of the page for photos.
like I said I am not a pro and the only...
pic #1 is silvers, they are hard to sex by looks do you know how to vent them?
#2 one on left and far right are regular red breasted males the one in the middle is a cinnamon red breasted male (young bird)
#3 white ? unknown sex and cinnamon red breasted FEMALE
#4 both the male and female...