My ultimate wish would be to design & build my own coop(s). Meantime, I procured a coupld of dog houses to modify. As Murphy & his law would have it, freak accidents and incidents have conspired to zap me of the necessary time & energy to complete the projects in time for my chickens to get into them, so I've had to turn to pre-fab coops online. My first one had no less than 6 different manufacturer's defects. It's been 2 weeks since arrival, and my birds are still not in it. In researching and comparing some other coops, it always seems like they advertise that their product can hold more birds than the space requirements I learned about on BYC. For instance, for standards, it's 4sq ft in the coop & 10 sq ft in the run per bird. For bantams, it's 2-3 and 6-8. So, let's say a coop is advertised as being able to contain 12-15 standard birds, because it has 36" total of perch space, yet it only has 17 sq ft interior space (which probably includes the nest boxes). By what I've learn in BYC is the minimum space requirement,17 sq ft will only house 4-5 birds. What is going on here? When I talk to sales reps, their angle is that the birds are only in there at night, and the close quarters will keep them warm in winter. What should I do? I am racing the clock with the chickens needing their permanent housing (they are in wire dog crates right now!), and I am in desperate need of surgery, so my energy gets more & more limited every day. Someone please help with some wise counsel!