An alternative name for a kestrel, and definitely what this one was doing!

Reading, UK, Canon R6 + RF800mm, 1/2000s, F10, ISO1000, Exposure Bias +1 1/3

Must have knocked the dial as that should have been F9. For most of its hover, its head was in the shadow of its wing , making for less than perfect shots needing drastic post processing, e.g.