Thoreau writes in his journal:
As to the winter birds,—those which came here in the winter,—I saw first that rusty sparrow-like bird flying in flocks with the smaller sparrows early in the winter and sliding down the grass stems to their seeds, which clucked like a hen, and F. Brown thought to be the young of the purple finch; then I saw, about Thanksgiving time and later in the winter, the pine grosbeaks, large and carmine, a noble bird; then, in midwinter, the snow bunting, the white snowbird, sweeping low like snowflakes from field to field over the walls and fences.
