Roostros are the alpha birds on the Far, Far Range and half of the equation required to breed chickens on the ranch. However, roostros are rarer than any hen making them a great find any time one is discovered. To acquire a roostro, either find one out on the range or breed them on the ranch. Any type of chickadoo has a small chance of growing into a roostro. Some ranchers believe that these odds increase if you greet the Rooster King's crow at sunrise with an enthusiastic 'good morning!'
All hens in close proximity to roostros will periodically lay eggs that produce chickadoos. However, keeping too many hens or roostros in close proximity makes them anxious and egg production will come to a halt. Savvy ranchers with an understanding of the complex nature of chicken romance always keep their coops from exceeding 12 grown chickens.