Assertion: footed booby | /r/HasAspect | protective sacs
Facets:
value: around their skulls
type: LOCATION
Source sentences:
text: Special adaptations allow blue-footed boobies to barely be phased by the impact they experience during hunts: they have protective sacs around their skulls, which are filled with air to serve as a cushion for their birdy-brains when engaging in their ritualistic searches for food.