Assertion: juvenile mockingbird | /r/HasProperty | tutored
Facets:
value: with natural songs
type: OTHER
Source sentences:
text: To test the possibility that the taped tutor songs of cardinals or cowbirds contained some subtle cues such as brief pauses or discontinuities, other than frequency, that might influence when the mockingbird switches from one side of the syrinx to the other, some juvenile mockingbirds were tutored, not with natural songs, but with computer synthesized cardinal-like FM sweeps or cowbird-like note clusters.