Part of our coop is near a large live oak. A big lump of moss fell into the run and the chickens are going wild. They seem to LOVE it. Is this okay? Will it cause a parasite problem? I know you don't want to use it for nesting material, but they're eating it up. I hope it's not a problem, because this will not be an uncommon issue with the location of their run. We are adding a full roof soon, but probably won't be til the weekend.