Alfred Newton, 1911 Encyclopædia Britannica, Volume 19… (1911)
“ The chief food of the Nutcracker appears to be the seeds of various conifers, which it extracts as it holds the cones in its foot, and it has been questioned whether the bird has the faculty of cracking nuts—properly so called—with its bill, though that can be used with much force and, at least in confinement, with no little ingenuity. ”
