Birds lived for years under the tent at Gourmet Fair at Sherway. Food merchants would quietly replace someone's food if a bird ever crapped in it - which was a rare occurrence nevertheless. Sherway had sparrows, which may be the same here, I wasn't close enough to them to confirm.
My 5 year old son went down the slide 3 times the other day...very safe...and actually not very fast...he came to a stop each time well before the opening at the bottom.