Have you ever thought about the derivation of the Red- and White-breasted Nuthatch’s common name? It comes from their habit of wedging a nut, acorn, etc. into a tree’s bark, and by repeatedly striking the nut, “hatching” or exposing the seed within it.
Many of these seeds are then stored in bark furrows for later consumption. In one study it was found that nuthatches spend more time caching husked than unhusked seeds (71% of sunflower seeds cached were husked). This inevitably would lower the expenditure of energy and time spent when consuming the cache later in the season. Hiding time, and time and distance flying from feeders to cache sites were longer when nuthatches hoarded husked than unhusked seeds, perhaps indicating their increased value to the birds. (photo: White-breasted Nuthatch with husked sunflower seed)
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Birds that remain in New England year round use various strategies to withstand cold winter nights. One such strategy involves choosing a site well-protected from the wind, such as a thick stand of conifers, in which to spend the night. Birds that nest in cavities, such as nuthatches and woodpeckers, often roost in holes as well. White-breasted nuthatches usually roost singly. Occasionally two may share a hole, and as many as 29 have been found in a large tree cavity.