Our 6 week old girls (or maybe girl and 2 boys) have been spending much of each day outside now in a makeshift run...a portable x-pen made for dogs. For the time being, I've been covering it with a Coolaroo dog bed to keep the sun off them, keep them inside, and keep other animals outside. As we begin construction on our final run for them, I'm trying to decide if sun shade fabric that can be purchased by the foot at Lowe's, Home Depot, etc. will be enough protection from the sun for the chicks or if I should get a small tarp instead. I like that the breezes can go through the shade fabric, but the tarp will provide more sun protection for them here in So. California. Our run will be similar to the eglu and this one: http://www.thehatchingpost.com/forsale.html using the dog house suggestions from Mother Earth news. Any preferences from anyone more experienced then me? Thanks!