Only because I did win the lottery three days in a row, I'll go one step further, or at least a tangent.
In both of my ponds, I've seen evidence of 'heron attack wounds' on various larger fish, as most of you have seen. You know, the puncture wound, the slash/cut.
On most of these wounded fish, they are way, way too big for any heron to eat.
I believe the heron is trying to kill other predators that compete for it's food source.
Intelligence or instinct?
Or a kid with a BB gun?