I had an open 10 x 12 ft. x 5 ft. tall enclosure with a small house inside. I recently put a roof over most of the enclosure. I want to get rid of the house to give them more room, 4 hen s full time inside. Do I need a house or will a roosting section and nesting boxes be enough? The house in the pic was originally desinged for ducks but they were carried off by an owl last year so the chickens us it as a nesting box.