The hoop is the house. I imagine something like 12 x 8 for maybe 50 birds with a deep litter floor and hanging roosts to beat red mite. Around this will be 100m electric netting so they have grass. It's primarily for them to roost and shelter from the rain. I am also considering a separate nest box unit away from the main roosting house to discourage broodies and night time nesters. I figure if I get a broody, I can go up after dark and pop her back in the main house. She won't easily be able to get back in a nest box that way. It also means I can keep moving the nesting unit around the run onto clean grass to prevent mucky feet in winter.