It's a 5 gallon cooler from Walmart $22. a few fittings from Home Depot and 2 nipple waterer. TIP: Drill your hole in the PVC and use a lighter to soften the PVC then thread your fitting into the pipe. Cool it with water then remove it and add pipe thread compound. This is the best way with no leaks.
Hi rhoffart... Great looking coop !! Just out of curiosity, where did you get the watering cups from ?