My wife and I have a 6x16x6 ft chicken run without a coop for our black australorps. We don't have a coop because we live in the tropics and the coldest point in a whole year is 65 degrees. That means the run is just a big, blank, boring rectangle. Right now the only things in the run are a really nice roosting perch, a waterer, a feeder, and a tree stump big enough for maybe 2 to perch on. The ground is totally covered in rice hull, but should I remove half of the rice hull so the chickens can experience different types of ground? Also, what else could I add? I'm thinking of adding a chicken swing because it looks so easy to make and we could hang it off a rafter. Should I add any big rocks for them? Or maybe another stump? The only stumps left are small and can only hold 1 chicken each I think. How can I make the chicken run more interesting for the chickens? The chickens won't be allowed to free range because they are right next to our crops so I want to be sure it's a cool place for them to live.