Best Waterer for a Mobile Coop?

[spalding17]

My first coop was stationary, so I just have some large rubber tubs. I've recently built a mobile coop and I was wondering how most people handled the water situation. I like the idea of pvc with nipples, but what do you use to hold to water? Do you attach something to the coop? Make it so you can separate the two and move them individually? Wait until the bucket is empty to move?

 

[nguyenkinhphuc2]

For your mobile coop, I think rabbit waterer may work:

http://www.tractorsupply.com/en/store/lm-animal-farmstrade;-wide-mouth-water-bottle-64-oz