Before we let my chickens outside in a short while we need to do some work with their outdoor run. So far we know for sure that we need to cut down the weeds and overgrown bushes and re-do the fence. So what I'm wandering is what to have on the ground for them. Grass? Dirt? Sand? Stone? Please help! Also I desperately need answers on my other thread: https://www.backyardchickens.com/t/823363/ducks-chickens-together