Bright periods alternate with gloom on a cool, cloudy morning, with an intermittent breeze paging through the tulip tree leaves. A sound like the clacking of a typewriter as a squirrel trots across the metal roof overhead.

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.

Bitter cold and still at dawn, as the first silouette of a squirrel emerges from its nest of sticks and leaves high in the limbs of the big tulip and descends the tree, claws ticking against the bark. The clouds redden. A distant rifle booms.