This morning I discovered that a small mouse has built a really cute feather nest under our heated water bowl which is inside our enclosed chicken area. I am not going to hurt the mouse but I would like advice on whether or not this will become a problem and if it will, what non lethal methods should I use to keep mice out? It seems to me like the perfect mouse home--safe from predators (don't think chickens mind but I don't know), warm, easy access to water and grain. We have indoor but not outdoor cats and I'm not going to get an outdoor only cat as it's too cold around here and too many predators (coyotees).