The white vertical lines are raindrops. I experimented with different shutter speeds to change the length of the streaks.
We have a pair of Swainsons hawks in the neighborhood. I took about 2 dozen photos to get just one nice shot. The hawk was backlit, I was using a 80-400 mm Nikkor zoom lens at 400 mm which can’t do better than f 5.6, and my older D80 does not work well at high ISO. But I’m happy with this image.