Answer by
wms10 (93)
Inspect your attic for droppings and listen to the sounds the animal makes and when. Night time scurrying is caused, most likely, by rats or mice. Daytime scurrying, however, is most likely caused by squirrels. If you hear thumping/walking sounds at night, it is probably a raccoon. Rustling and cooing in the daytime is caused by birds.