Thank you kindly ladies...
It was a pre-fab that was here when we bought the place... I kinda hated tuh use it as a coop, but mrsnad talked me into it... we put down an epoxy resin that you normally use in a garage, in the hopes that if'n/when we get rid of the chickens, thebuildin' will hopefully still be usable...
One plan I saw in one of those whole-earth magazines suggested cutting a slot in the wall below the roosts and forming a shallow metal pan with turned up edges to slide in below. Keeps the worst of the chicken poop off the wood floor, and best of all you just slide it out and hose it off over the compost pile!