The reason we want to know is it's been walking on the pool cover to near the middle of the pool.. to take a nightly dump.
droppings
Strafed by a Winged Creature…
Without performing a microscopic examination, I decided I had been hit by a bird.
Feeding Birds, Not Mice…
Their tiny bodies (and even tinier stomachs) require them to eat 15 to 20 times a day
Johnny on the Spot 