I tried the nipples. They are okay for outside watering, but I did not like them for inside watering (during winter). I have a wood floor in my coop & they would leak & make a mess. Early this spring, I was at my local farm store & bought a container that had the cup waters. The cup didn't leak, but my hens would sit on top of the container & poop in the cups. Cups were hard to clean out all the time. Now (This week) I'm rigged up a new system. I bought a Bergan automatic dog waterer (picture below). It is suppose to hook to your garden hose, but I did something different. I rigged up a 5 gallon bucket with a spicket on it. Hung the bucket from the ceiling & ran the garden hose to the automatic dog waterer. I built a platform for the waterer to sit on, so the bowl would be chest high to the birds. Ive been using it for the last 2 days and it seems to be working great.