Flurries starting in fifteen minutes, says the weather app, and fifteen minutees later the air is full of flakes wandering this way and that, every bit as sentient as AI bots. By the time they stop half an hour later, I’m a snowman. A squirrel carrying a walnut walks right under my chair.

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.

A wedge of yellow light in the clouds for half an hour past sunrise. I’m learning to spot when a squirrel is about to dig up a nut: it stares off into space in one last effort to convince any watcher that it’s doing something entirely different.