Assertion: eagle's feather | /r/HasProperty | brown
Facets:
value: as soon as they start
type: TEMPORAL
Source sentences:
text: Bald eagles have brown feathers with a white head, a white tail, and a yellow beak.
text: The feathers are brown as soon as they start to appear, which happens starting at 5 weeks of age; they are pretty well fully feathered by 9 weeks.
text: An eaglet's first true feathers and beak are brown.