Flocks of fat American Robins perching to face the sunrise, then moving through the trees, high and low, plucking winterberries from gray branches, leaving birdy footprints in the last white patches of melting snow as they pursue the fallen berries.

It is much easier to notice robins in winter. There are more of them, in their foraging flocks, and they are not down in the dirt, devoted to pulling worms. The ground is mostly frozen and the worms are… sleeping? What happens to earthworms in winter, I wonder.