Assertion: woodpecker's skull | /r/HasProperty | thickened
Facets:
value: with strong but spongy bone cells
type: OTHER
Source sentences:
text: They have thickened skulls and powerful neck muscles that enable them to deliver sharp blows without damaging their organs.
text: However, just to make the mechanics that little bit better, the skull of the woodpecker is thickened with strong but spongy bone cells which protect the brain.