He's actually been eating a lot (which is why there was poo to clean up off the basement floor). I found the mouse lying there while I was watering some plants. One of the cats must have killed it at some point.

They like to bring them home sometimes though! That mouse was probably caught where it died, but sometime they sneak things in from outside.

Birds are more than toys to my cats though. I usually only find feather and blood. If there's a whole dead bird, my windows are to blame, not my cats.