This is a brilliant article! In order to produce 5 colors of eggshells, I have to keep 10 roosters. One main breeder and a backup rooster for each color of eggshell (chocolate, mint, olive, blue, pink). 10 or 12 breeding pens with one rooster and 2 hens each is getting to be a lot to maintain past breeding season. I’m in the habit of letting them out of their pens to free range, but sometimes any of them don’t mind their own business and I have to break up squabbles. Breeds include Australorp, Ameracauna, Penedesenca, Marans, Naked Neck.