We got 3 ducklings and four chicks this year and are starting to build a coop. All of them will be free ranging our backyard during daylight hours. We want a coop and run for them at night. I know around 3 to 4 square feet of coop space per bird is good. We are going to be converting a storage shed. But I have been reading that they should have 10 square feet of run space per bird. Is that still accurate if they are not in it all the time and it will only be for nighttime housing? Any advice would be great.