Yesterday afternoon I went out for a walk, part of it along the large street that curves along the railroad tracks that run by us. There were two crows sitting on the tracks, and then one of them took off, flew upward, and then plunged down over the street, and up again over the buildings on the far side, in a huge aerial U. Then it reversed direction and flew back.
As I was walking back up our street at the end, I saw a crow, possibly the same one, doing a similar U-shaped flight over that street.
All this was a pleasure to watch; the maneuvers were really dramatic. It looked as if the crows (or the same crow in two places) were flying like that for the sheer joy of flying; and also as if they were showing off their aerial prowess.