They really are little hunters alright. Years ago 3 of my sweet little babies (yeah right) got hold of a bird. The problem was that it was one that my daughter's cat had brought into the house for her (she had a terrible time trying to teach my daughter to hunt lol.) in the middle of the night. We woke up in the morning to blood and feathers all over the place and several telltale little feathers around certain mouths. Mine have always been the first to tell me if there's a mouse or something in the house.