Meanwhile I was having a lot more success with the wide angle setup on their favourite perch. By this point I'd left the camera in that spot for over a week (constantly checking it from the other side of the river and bringing it back home at night) and setting up in different angles.
The photos below are a series of that setup. While I appreciate this type of image isn't for everyone, I have plenty of close-up shots of kingfishers over the years - the classic 'bird on a stick' photo. So I wanted to try something different and a wide angle seemed like a good place to start.