I am a complete newbie to chickens, but after reading every book I could get my hands on and spending hours here at BYC, I've decided to jump in with both feet. I have 12 Red Star chicks and 13 White Leghorn chicks on their way, all females, but I never gave it a thought when I ordered them. Do I need to keep them separated? If so it's not a problem, I'm just wondering. Thanks.