Diamond shaped object which flew past Kissena Corridor Park. It was not a bird, because I was watching the hawks circle above Botanical Gardens. And it was not a plane, as I’ve seen those come and go. I watched it fly past for a minute or two. Seems like it may have been black, with a light that shined occasionally. Not sure if the light was coming from it, or if it was a reflection off the surface, from the sun. But the light is how I knew initially, that it wasn’t a bird.