I call this Heron Pool, below this aerating waterfall, as I once saw a great blue wading and stalking koi here. Within a week or so, the pool was mesh-covered. Now, there are fish and no mesh, yet I have not seen the heron. In the center of the pool there’s a Japanese maple, and it’s now much larger and more sheltering than it was years ago when I saw the hunting heron. How ’bout when all the leaves are gone, though?