Papers Falling From The Sky?

Why?

“So here's a bizarre thing that happened to me on Tuesday about 5 o'clock...

“My husband and I were taking a walk around the neighborhood. I am very visually observant, he is not. I look up - it has been intoxicatingly beautiful here these May days - and high in the skies - if I had to guess I would say 20 stories up (we are in the suburb, no building to compare) - I see about 15-20 pieces of paper just falling from the sky. They were, when I first noticed them, close together but the slight wind was causing them to disperse as we watched. I even asked two women I didn't know who happened to be passing by if they saw what we were seeing and they did. We all thought it quite odd. My husband and I altered out route to see if we could find one that had landed. We were unsuccessful.”

—Amy (comment section)

Video of paper falling from the sky.