Assertion: bald eagle | /r/HasProperty | mature
Facets:
value: sexually
type: MANNER
value: at about six years of age
type: TEMPORAL
Source sentences:
text: Bald eagles are sexually mature at four or five years of age.
text: In fact, bald eagles don't even develop their striking white head and tail feathers until they are mature, somewhere between 4 and 5 years old.
text: Until the bald eagle is mature, the replacement feathers are of different colors.
text: By the age of four or five, bald eagles are already sexually mature during which they look for a mate to have offspring with.
text: Once bald eagles are mature at about six years of age, they participate in dramatic aerial courtship displays to attract a mate.