Assertion: quetzal's tail feather | /r/HasProperty | rectrix
Facets:
Source sentences:
text: A few other defining characteristics of this tribe include physical descriptors such as uniform and iridescent green to blue head, throat, upper breast and upper parts; and contrasting red to yellow underparts; as well as a colourful, bare eye ring; a serrated or notched upper mandible near the tip of the bill only; and in females and juveniles, the presence of noticeable black and white patterns on the three outer pairs of tail feathers (rectrices).