One of a pair of Kingbirds that shows up whenever we mow the yard. I guess they are after dead/injured/stirred-up bugs. They show no fear of me or the lawnmower, and will buzz right by my head sometimes. The bluebirds also go into a feeding frenzy when we mow, and there are some martins or swallows of some kind that show up for the feast, and mockingbirds. It's quite an aerial display.