Assertion: kookaburra's laughter | /r/CapableOf | mark territorial borders
Facets:
Source sentences:
text: Kookaburras occupy woodland territories (including forests) in loose family groups, and their laughter serves the same purpose as a great many other bird calls—to mark territorial borders.
text: Kookaburras occupy woodland territories (including forests) in loose family groups, and their laughter serves the same purpose as a great many other bird calls—to mark territorial borders.