I watched a Kestrel this morning. It was a warm and sunny morning and I had just entered a smallish field of rough meadow - full of tall grasses and flowers/plants. A kestrel hovered not far away. High above the field, at about tree top level, it was facing the oncoming warm breeze and making continual fine adjustments with the delicate fluttering of its wings. It would glide to a new location, hover, survey the ground below then move on a little. Then it would sweep back over the field to begin a new transect and begin its search from a new location. I watched it for around ten minutes before it moved away to perch in the nearby trees.
Is there a lesson an patience and perseverance here I wonder?
On reading a little on the web I discover that although hovering requires more energy than, say, gliding it can be more productive food wise. Apparently they can see into the ultra-violet which makes tracking the urine trails of their favourite food, the field vole, easier.