Assertion: cockatoo's bird | /r/CapableOf | preen each other
Facets:
value: to maintain the pair bond
type: PURPOSE
value: with respect to their age
type: OTHER
Source sentences:
text: During the warmer parts of the day, these birds will sit and preen each other.
text: We’re looking at how the birds might be having a fight, or preening each other, looking at those relationships, and also with respect to their age and if they are a breeding bird.
text: These birds perform simple courtship displays and preen each other to maintain the pair bond.