Assertion: cockatiel's feather | /r/CapableOf | help the bird
Facets:
value: for warmth
type: PURPOSE
value: in its flight maneuvers
type: OTHER
Source sentences:
text: The skin muscles help a bird in its flight by adjusting the feathers, which are attached to the skin muscle and help the bird in its flight maneuvers as well as aiding in mating rituals.
text: Powder Down Feathers are small light, fluffy feathers that trap heat and help insulate birds for warmth.