We picked up a free doghouse on craigslist--who could ask for more..... Put roosts in on both sides and cut a door in the side for ventilation and access. This puppy is double walled and insulated and heavy as all get out! With hay 6" deep on the floor, the girls love it. Hens and ducks sleep in it at night and lay eggs in it during the day. Best 'buy' we ever made.
There is a pen wrapped around the house that is 15x65 feet. That way they have plenty of digging and scratching space, even when they can't run loose in the yard.