Assertion: honey buzzard's feather | /r/HasProperty | moulted
Facets:
Source sentences:
text: In addition, the feathers of a bird suffer from wear-and-tear and require to be moulted.
text: The outer primaries of male broad-tailed hummingbirds produce a distinctive high-pitched trill, both in direct flight and in power-dives during courtship displays; this trill is diminished when the outer primaries are worn, and absent when those feathers have been moulted.