Assertion: feather's bird | /r/CapableOf | preeningpreenuse the beak
Facets:
value: to maintain structure
type: PURPOSE
Source sentences:
text: Birds constantly maintain their waterproof coat through extensive grooming, or preeningpreenusing the beak to maintain the health and structure of feathers to ensure that every feather is in good shape.
text: Throughout the year, the bird maintains its mature feathers through regular care, or preeningpreenusing the beak to maintain the health and structure of feathers.