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.

How much of a resident nuthatch's diet might be supplied by stored caches on specific cold winter days?
birdanimalWintermigrationNuthatch