At what age do they start to really fly (as in fly enough to get out of a brooder with 20" sides?) And, if I happen to get males in with my batch, how old are they before they start to crow? And if one was planning on just eating any roos, how old do you let them get before doing so? I am assuming if you end up with more than one male, you need to separate them at some point, is this correct? Thanks all!