Three or four slow-moving squirrels crowd onto the big tulip tree. But there’s a loner 50 feet away, diving repeatedly into the snow as if unable to locate a buried nut. After a while, he retreats into the canopy to eat black birch seeds.

Partly cloudy and cool at sunrise, with more yellow and orange leaves than I’ve ever seen this early in the fall: not just walnut and black gum but black birch, tulip poplar, and even a few maples, just as our 30 acres of goldenrod approach their peak of bloom. I’m reminded of the Chinese name for San Francisco: old gold mountain.