In Storey's Guide to Raising Chickens, she talks about rotating the run areas (like one would rotate crops) in order to allow the soil to recover and to discourage an overgrowth of parasites. Does anyone do this? We are rather limited on space, and I'd like to know if we need to build 2 smaller runs or if most have found it to be OK with just one. My chickens will occasionally come out to free range, but most of their time will be spent in their run/coop. Thanks!