Assertion: black swan | /r/CapableOf | undertake this behaviour
Facets:
value: less frequently than mute
type: MANNER
Source sentences:
text: Cygnets may ride on their parent's back for longer trips into deeper water, but black swans undertake this behaviour less frequently than mute and black-necked swans.
text: Cygnets may ride on their parent's back for longer trips into deeper water, but black swans undertake this behaviour less frequently than mute and black-necked swans.