I agree, the more space you can feasibly give them the better. What works for one group might not work for another, breed, temperament, personalities, roo's, etc. can all change the dymamic. I have 40 birds currently and my fenced space for them is a little over 100 x 100 ft. Luckily I have the space to do that. Since I have multiple roos this gives everyone space, there is no fighting, and the girls have plenty of room to get away. Some of my roo's will roost right next to each other at night.
