Do your remember what eggs you ordered? They could be, but like I said I'm new to quails, too.
going to try to tag someone else:
https://www.backyardchickens.com/members/007sean.386560/
Not sure I am doing this right. Hope he will fine us.
I'm new to quails too. I have a flock that is 8-9 weeks old. Another one that is 4 weeks old. You will have to wait closer to 9 weeks to tell who is who. Go to the quail tab and click on Bobwhite update: sexing them.