Assertion: young ostrich | /r/HasProperty | grown by about 18 months
Facets:
value: fully
type: DEGREE
Source sentences:
text: The young ostriches fledge at 4 to 5 months and are fully grown by about 18 months, reaching sexual maturity after 3 to 4 years and potentially living for up to 30 to 40 years(2).