Kestrels can hover in a perfect calm https://amp.theguardian.com/news/2011/sep/09/weatherwatch-kestrel-windhover https://amp.theguardian.com/news/2011/sep/09/we

Kestrels can hover in a perfect calm https://amp.theguardian.com/news/2011/sep/09/weatherwatch-kestrel-windhover https://amp.theguardian.com/news/2011/sep/09/weatherwatch-ke...