I have 15 6wk old chicks. I'm pretty sure 2 or 3 are going to be roosters. Feed store said to bring them in & they would give me 2 or 3 females in exchange. Is this safe? I can't say I'm aware of an obvious pecking order at this point. Will the newbies be ok? I don't have space for any type of separation. I would rather have 2 or 3 less than have trouble.