I need to build brooding boxes that hold hundreds of chicks!!! (Free range!) If I give each bird 4.33 square feet of housing when its 4 weeks old through 8/9 weeks, how much space should I give them at these stages? Day Old Week Old Two Week Old Three Week Old The boxes will be 59 feet long by 4 feet wide, and however deep I need. I want to build them similar to this design except imagine it being 59 feet long. https://www.backyardchickens.com/a/amferro103s-homemade-chicken-brooder Inside this long box there will be slates that can be moved every foot. This slates will serve as separators. Chicks will be placed in one end of the box and a slate will be placed allowing them the required space, but also not wasting space. As the chicks grow the slate will be moved to give them more space. Another set of chicks will start from the other side of the box one week after the first set. So to two spaces will move closer to each other until there is just the one slate separating the two. At that point the first set is moved into a grow out area and that side of the brooder is cleaned and let set for a couple days. We will have multiple of these boxes with isles between them. Enough that we can allow time for cleaning of each one, and always be able to produce a consistent amount each week. So how much space do I need at those ages? This will let me know how big to build the boxes, and how many to build. Thanks. (FYI: Our chickens will have 4.33 square feet or more of housing, and over 11 square feet total space when you include their outdoor runs (until we find a way to utilize our pasture space)).