I always wonder what size coops people have. I personally have a very large shed 40x40 that I use as my main coop. It's got a few separation pens, half the shed houses goats that other half houses donkeys. The chickens are allowed all over most of it but are kept out of the feed areas. They do have their own areas. They roughly have access to 30x40. I think my shed maxes out at about 75-80 chickens and 10-15 muscovy ducks. My birds are free to come and go, there's no run on this shed. My bantam coop is 8x10 with a run roughly 6x30. They aren't often locked in and can come and go as they please. It comfortably houses 15-20 bantams. My turkey shed is 10x12 with a 20x100 foot run and can house 12-15 comfortably. So share what you have, because I'm always wondering. Feel free to share pictures too. I've seen some adorable coops on here. I'm also curious if anyone else has a big building, which is definitely a luxury.