Have enjoyed the site reading all I can in the few days since I found it. I am contemplating a few backyard hens for eggs and the obvious gardening advantages. We are just two in the family and I was thinking three hens would be fine. Then heard that a minimum of four makes for a better society pecking order, winter nights cuddling I'm in Northern Michigan). Thoughts? I will be tearing down a large storage building which will provide more than enough lumber for a coop. I am debating whether to build a coop inside the 24X12 lean to (which is on the rear of my garage and already has electric, etc) or wait and build a tractor. I sort of like the moving it around the lawn idea, but am unsure how predator proof the movable tractor would be. I have sufficient room to add a run to the lean to if I go that route. I am standing on my learning here that 4 square feet per bird in the coop and 10 square foot of run per bird is sufficient. Correct? Also, do folks just leave the run bare dirt, or are there better options (sand?)? Just wish there were more free coop plans available !! Thanks for all of the good info.