Assertion: bird | /r/CapableOf | arrange their plumage
Facets:
value: properly
type: MANNER
value: for flight
type: PURPOSE
value: for the most effective insulation
type: PURPOSE
value: for waterproofing
type: PURPOSE
Source sentences:
text: Preening keeps parasites in check, removes dirt, keeps feathers supple and allows birds to properly arrange their plumage for the most effective insulation, waterproofing and flight.