https://thekidshouldseethis.com/post/a-kestrel-hovers-and-hunts-in-cornwall-a-quiet-3-minute-video
Kestrels are one of nature’s most skilled aviators, capable of hanging in the sky like a kite tethered to a string. Like hummingbirds and kingfishers, #kestrels have the advantage of a larger accessory optic system, a sort of superhero power that detects movement and helps keep their balance, enabling unparalleled #headstabilization while hovering.