I have a flock of 20 birds (2 roos, 18 hens) inside a portable electric net pen. Well, the roos are getting frisky, and I have to split the flocks. The only problem is that I have only the one house. I need plans for a house that is portable, and holds about 30 birds (always leave room to grow). All the birds overwinter in a large coop together, so it doesn't have to be 'winter-proof', but it does have to be dry.