Assertion: bowerbird's tone | /r/HasProperty | learned
Facets:
Source sentences:
text: Because mimicked tones are learned, a bird with more vocal variety is demonstrating its intelligence, ability to survive, and other characteristics a mate would find desirable.
text: Because mimicked tones are learned, a bird with more vocal variety is demonstrating its intelligence, ability to survive, and other characteristics a mate would find desirable.