A very poor photo, but not only was the heron far away but in the worst possible light. When I tried to get a photo with better light, it took off. Herons used to nest regularly at the garden for a number of years, but haven't done so for many. Wonder if there will be a pair around this year, or perhaps this was just a single event and we won't see the heron again. Probably attracted to the pond because there was a lot of amphibian activity: toads singing up a storm, and green frogs active at one end of the pond.