This was a very interesting coop built to Scott James‘ design last fall on his mini-farm. The coop was built on a steep slope with a door at the top end to “input” litter. The chickens’ activity slowly works the litter down, mixing it with their manure until it rest against a “tailgate” at the bottom end that can be dropped down for annual removal of the compost. There is a watering system that brings water from the roof to interior nipples, feed tubes that can be loaded from the outside that bring the feed in, bucket nests, and an automatic chicken door that leads to a tunnel to a day pasture that is protected by electric fence and top netting. You can read his blog about this project here: Weekend Warrior projects.