We have a family of birds living in a birdhouse under our carport (they've never done that before or we wouldn't have stored under the carport). Jessie asked me what a bird poop spot on my car was and thought it was hysterical when I told her what it was.

When I picked her up from school, she said, "Is that bird poop on your car?" I said yes and she said, "That's silly. They should use their birdy potty."

I smiled and asked where she thought their birdy potty was. She responded, "In their birdy bathroom in their birdy house." There was an implied "duh" in there.