Assertion: starling | /r/CapableOf | try out different riffs
Facets:
Source sentences:
text: Starlings also make things up as they go along, trying out different riffs, injecting new clauses midsentence, suggesting that a property of human language known as recursion may — like so many other widely shared phenomena: tool use, culture, self-­recognition, empathy, grieving — not be exclusive to us.