Assertion: cockatoo's population | /r/HasProperty | estimated at 42,545–183,129 birds
Facets:
value: in 1991–1992
type: TEMPORAL
Source sentences:
text: It remains locally common: in 1991–1992, the population was estimated at 42,545–183,129 birds (Lambert 1993), although this may be an underestimate as it was largely based on surveys from Bacan and not Halmahera where the species may have been commoner.