I am thinking about a very small hen house with attached run. I am planning this to look alot like a tractor and work the same way, staying ontop of the vegetable patch over the winter and moving around the backyard in good weather. The run will be 3 feet by 8 feet, and the max occupancy will be 3 birds. My question is how large a house will those three birds need? I'm aiming at something that in size and shape looks like a dooghouse, say 3 by 2 or so. If a neighbor peeking over the fence gets a look at it, I'd like it to look like a rabbit hutch. I have seen the postings here about dog houses as coops and have been inspired.