I used to tell people that 10 to 1 was the general ratio, 1 rooster to every 10 hens. However, experience has taught me that's not always true. I bought a couple batches of chicks last year and wound up with 8 roosters and 16 hens. I got that batch down to 4 roosters (1 bantam and 3 standards) and 16 hens (1 bantam and 15 standards), and they got along fine. Then, one day while they were out free-ranging, one of my bantam roosters from a different coop decided he was going to move in with the new ladies and those other 4 roosters, and he declared himself the big man on campus. lol! So far, he's maintained his position as king with none of the other roosters challenging him, but I'm not sure how long he'll reign. Either way, they're all getting along fine right now, and there are no bare-backed hens. I'm pretty sure little Edgar is the only one who gets to do much lovin' in the coop and run, but I've noticed when they free range they tend to break off into groups, with the hens spread among the roosters. The run is also fairly large (50ft. x 50ft.), so they have room to get away from each other, which may aid in their tolerance of each other.