This reminds me of something that Mark Bezinque reported 9 days ago.
About 10 minutes ago I was meeting with someone in my office, telling him about the falcons. Just then one flies by the window, and the person I was meeting with said there were two. The two began to fight, engaging in a locked death spiral just to the south of Broad Street over the river. Beauty took off from the nest to join the fight.
Had to be one of the more spectacular sights I've seen out my window.