I recently constructed a few 4\'x8\'x2\' chicken tractors with hanging feeders but had a hard time figuring out a good way to supply water without the mess and spills. I saw an ad for Avian Aqua Misers, a nipple type water spigot and am now sold on the idea. Using 2 gal. buckets with lids from the hardware store, i placed 3 nipples each and hung them on a cross bracket. They figured it out real quick, no mess, no poop and i don\'t need to take them out every day to fill. I\'m planning on using 5 gal. buckets in the coop runs now. Just wished to pass this along to anyone who has not seen them.
Their site has a picture of a hose/pvc pipe with float automatic waterer also.
eliz