So we don't even have chickens yet, but I am trying to do my homework, and figure out all the logistics first. I think I'd like a coop/roost/nesting box that I can move around the yard at will. Is this called an "ark"/"tractor"? We live in an older central Phoenix neighborhood with a large, grassy backyard. However, I am unsure what to do about our monthly (cooler months) or bi-monthly (in hotter months) irrigation. Do I need to move the chickens and coop all the way out of the yard before irrigation comes, or will they simply go to "higher ground" retreating to the roost portion for the few hours it takes to soak in? Or will they not even care? It generally soaks in very quickly, in about 3 hours, but of course leaves the pretty soggy ground behind. Is this a concern? I notice the neighborhood birds find that they LOVE to pick the bugs or what-have-you that float up during the process-perhaps the chickens would too? Please advise and TIA!