Assertion: hummingbird's song | /r/HasProperty | squeaky
Facets:
Source sentences:
text: Most hummingbirds, especially the smaller species, have scratchy, twittering, or squeaky songs.
text: The male's song is described as a loud seep (somewhat like a squeaky wheel) - often repeated several times.
text: The song is thin and squeaky, interspersed with buzzes and chirps, and is drawn to over 10 seconds in duration.