How much of a resident nuthatch's diet might be supplied by stored caches on specific cold winter days?
Answer
Up to 80%
Some observations indicate that nuthatches may rely on their stored food supply for as much as 80% of their necessary diet when facing severe cold.

Related Questions
What is the common winter destination for many North American nuthatch species?What is the most critical adaptation for overwintering nuthatches?What specific event might cause a Red-breasted Nuthatch population to move south?How much of a resident nuthatch's diet might be supplied by stored caches on specific cold winter days?Where do nuthatches typically wedge their stored food items?What is the nuthatch's very first defense mechanism when temperatures plummet at night?What structures, besides natural tree cavities, do nuthatches frequently use as sheltered roosting spots?What is the advantage of the tight roosting cavities utilized by nuthatches?What is the distinct, nasal call of the Red-breasted Nuthatch?When supporting wintering populations, what high-energy food is highly favored by nuthatches?How do nuthatches utilize suet as a high-fat supplement?