Assertion: bird | /r/CapableOf | use plumage
Facets:
value: sometimes
type: TEMPORAL
value: to assess social dominance
type: PURPOSE
Source sentences:
text: Birds sometimes use plumage to assess and assert social dominance, to display breeding condition in sexually selected species, or to make threatening displays, as in the sunbittern's mimicry of a large predator to ward off hawks and protect young chicks.