The heron is a regular now late in the afternoon. He hunts at the base of the dam and catches several fish in about 30 minutes of work. He's quite focused so it's easy to get a good look at the whole process.
Don't search for it in this drawing; he came by after I'd drawn the area where he frequents. But here's a view done in crayon of him criss-crossing in front of the bridge the other morning.