After I had cut all of the grass this afternoon, Luna and I sat down on the river bank in the sunshine.    The Kestrel was on the overhead electricity wires across the river and stayed whilst I went indoors to grab the camera.   After a little while he dived into the paddock and out of sight but I did manage to get a picture, albeit it not very sharp, of him diving down.
I had the Covid booster vaccination at lunchtime,, all quickly administered and a wait of ten minutes to make sure there was no reaction.