We are almost done building our first chicken run for our two Rhode Island Reds, and I have a couple of questions for the experts on the board: 1) Right now, the fenced-in run area has a dirt floor. Should we leave it all dirt, or cover it with mulch or hay? The chickens will be in the run all day most days since we can't let them free range while we are at work, so the floor will get pooped on a lot. Do most people just rake the dirt to clean the run? Or is it better to have something like hay or mulch than can be raked up and refreshed from time to time? 2) I am thinking of planting a bougainvilla vine on one side of the run so that it can grow up and over the fencing to provide shade, privacy and protection. Does anyone know where I can make sure bougainvilla isn't toxic to chickens? I wouldn't want them to eat a blossom and get sick. Thanks for your help!