I saw these "universal pop bottle" waterers at Meyer - they look like a good idea for keeping water in our small run - water will stay cleaner and easy to refill from outside the run. I'm just wondering if their 1" width is big enough for a full sized hen? Anybody used these? Think they would work? From Meyer: http://www.meyerhatchery.com/get_item_4449_universal-pop-bottle-water.htm Here's a picture of how they work: http://www.redoakgamebirds.com/shop/index.php?act=viewProd&productId=94 I have 7 chickens and would probably set up 2 or 3 of them in their run. Inside the henhouse they have a big waterer which they can access any time.