I just discovered last night that we "may" have rats. I thought it was mice again so I've been setting mouse traps at night near the holes and nothing. Yesterday I bought some new more human finger friendly traps and set them right after dark. Two hours later I went to go check them and one had been buried under a mound of dirt (a mound too big for a mouse to make) and the other had been tripped. Next to the tripped trap we found some large droppings that looked like huge mouse droppings. This may also explain the mysterious drop in egg production the last couple months. I thought the chickens were eating them or maybe a snake, but I rarely found egg shells or goo in the nests. If it is not rats what else could it be? Do rats leave/create huge mounds of dirt next to their holes? They remind me of the huge prairie dog mounds out west but these are in my chicken coop!!