Kingfishers hardly need introducing, but they do have a way of making you work for a photograph. These images were made in Rickmansworth on an overcast day in December, which suited the subject well - soft light, muted surroundings, and just enough colour from the bird itself. They are such small, bright flashes of movement that even when you know one is about, nothing feels guaranteed. When it does all come together, though, very little else in British wildlife photography looks quite as striking.