I ordered 7 chicks from MPC last week and they are shipping out the 12th. Yesterday, I saw an ad on craigslist for Black Copper Maran chicks....which I REALLY want. My question is, can I mix these chicks right away, or would I have to keep them seperated. My chicks coming from MPC are being vac'ed for Mereks. Any replies would help...this is my first time!