Assertion: songbird | /r/CapableOf | use specialized voice box
Facets:
value: in songbirds
type: OTHER
Source sentences:
text: Songbirds learn their songs and perform them using a specialized voice box called a syrinxSEE-rinksthe bird voice box, located at the branch point between the trachea and bronchi and containing vibrating tissues called labia, in songbirds capable of making two sounds at once via independent muscle control.