Hello All! I have a flock of 8 chickens which will be 6 weeks old tomorrow. I believe we have 3 roosters and 5 hens. They are a white leghorn cross. We just moved them to their outdoor coop and they are loving it! The coop is elevated off the ground and has good sized run attached to it. We do plan on having them free range some of the days. I have a few questions. First, the flooring of the run is dirt. I've been reading about putting sand(not play sand) on the bottom of the run to help clean up the droppings better, Has anyone ever tried this? Second, when do I changed their feed from chick starter? Also, when should we introduce grit if necessary? Any input would be greatly appreciated! Thanks!!