Finally! I found it wasn't almost worth keeping chickens considering the constant attention needed to give them clean fresh water... with some research and a little of luck I came up with this system, any comments or questions are welcome! I'm considering building and selling these. One of my nipples are leaking a bit around where it is screwed in because I didn't drill a straight hole. But even with that small drip (which helps the chickens realize where water is) the 5 gallons in the bucket has lasted 3 chickens and 4 ducks over a week so far. Note the top where I can insert a water hose and refill without opening the lid. I put on a cap, drilled holes in it, and put a little piece of scrap window screen in to keep bugs and spiders out but let air in so to create a vacuum. I'm building another drain pipe and I'm going to daisy change these together. Thats the neat thing you can hook up as many as you want as long as they sit lower than the reservoir. Oh yeah, one last little thing, I used a splitter for future expansion and in the meantime makes a handy place to rinse off your hands or other equipment without having to turn on a water hose.