I have 9 Bourbon Reds that are over a year old, and I just got 7 peachicks a few weeks ago, and they are over a month old, some are 3 months old. I am building a breeder coop, and plan to make an 20 ft wide by 20 ft long pen for the turkeys and peafowl. The peak of the roof will be 12 ft high. And plan to put them together when winter comes around. Thanks for any advice.