I only have a small flock - 10 birds total but three of the 10 are roos and I truly don't have any more room for another roo. The large fowl buff Brahma (Billy) and his LF BB gal Betty, have their own small coop/run because they are SO big and I was concerned they would step on/fight with the others. The other two roos - Charlie Cochin (my bantam boy!) and Ollie Orpington (standard size) are in with the other ladies (cochins and standards) and all is well between them so far with Charlie being roo in charge....whew and thanks again!!!!