Assertion: chickadee's song | /r/HasProperty | little value
Facets:
value: contrary to many published reports
type: OTHER
value: for identification within the contact zone
type: PURPOSE
Source sentences:
text: Thus, contrary to many published reports, song is of little value for identification within the contact zone, since a young chickadee there has the opportunity to learn both songs, or to incorporate elements of both songs into a “hybrid” song.