I just posted about my coop construction, which we just began, and I asked this question in that post but I'm hoping more people will see it or chime in if I separate it into its own post :)
When it comes to roost/coop space, is there such a thing as economy of scale? What I mean is, if you only have 6 (large-breed) chickens, you'll of course want at least 24 sq ft of coop space and 6 linear feet of roost space, per recommendations. But what about when you start getting into more birds? Many more birds? If you have 75 or 100 chickens, do you really need a 400 sq ft coop and 100 linear feet of roost space?
My coop will be around 350 sq ft. We are starting with 24 straight-run chicks, but in a couple years we may hatch some chickens for meat. They'll be free ranging all day during the summer, and then the meat chickens will be butchered before the snow falls. We'd have maybe a max of 50 laying hens in the winter. I feel like our coop is quite sizeable, but I'm really struggling figuring out how to get more roost space in it.
If I have 100 chickens only in the summer, do I need 100 feet of roost space?