Assertion: cockatiel | /r/CapableOf | hit their heads
Facets:
value: against cages
type: TRANSITIVE-OBJECT
Source sentences:
text: They may hit their heads against cages, pull their feathers, refuse to eat, or become angry.
text: They may hit their heads against cages, pull their feathers, refuse to eat, or become angry.
text: They may hit their heads against cages, pull their feathers, refuse to eat, or become angry.