I use these for bantam breeding pens, 3 feet by 3 feet by 2 feet high. for larger birds I would go 3x4x3. for a pair or trio. if they are going to be in your coop plywood would be fine for the roof.Winter I'm not sure of. All my project birds will have their own coop. I thought about making breeding pens in the coop until I can make another coop. Like a large dog cage with a wooden top. I left room at one side of the coop to build another just for breeding but now with having 3 different ones I want to breed it makes it hard. My extra coop all depends on what we are going to do with our roo. I can't let him free range with the cockerels because as soon as they hit the juvinille stage he started attacking. My husband doesn't want to send him to freezer camp and I am waiting for the other to become his age so they have a fighting chance.
On the bright side of all my confusion, my ccl eggs made it to the post office and I'm just waiting for my phone call.
ok for some reason It wont let me post the picture. they are basically just 2x4 frames. I used metal roofs because I also use them for quarantine pens.