Ive started reading some of these "coop" stories. And size seems to be something of an issue. m a bit stumped. I guess its cuz if you are wanting more than say 15 birds then why not build a bigger set up? If you KNOW your only keeping a small 5 to 8 birds hobby flock then one of these tiny set ups is no big issue but anything more than that I guess I would just figure one would be prepaid for growth in numbers. Well anyway the mane reason this Cancers me is I dint know what is acceptable size for any amount of birds. Do you need a nesting box for each hen? If they have ample roost space is that sufficient? And we let ours out during the day to free range they put them self up at dusk. When the snow is high they still insist on being out. The only time other than night they stay in is during a snow storm, heavy rain and when its cold strong wind. Our current coop is rustic but does the job. We move in two weeks and will be crafting a better coop and want it to be movable. Not a tractor but something we can haul up on a flat bed so when next we move we can bring it along. And then that will be a second coop. looking at being serious breeders on a small scale. About 40 birds total in the end. I know for some that's a lot but for us that's small. Eggs are an issue. Were a family of 10 and I want to ensure good layers through winter. Not all of the birds we have chosen are winter layers. So on and so forth. So again, how do I know Ill have ample space for a growing flock?