Assertion: bald eagle's number | /r/CapableOf | fall down to mere 400
Facets:
value: in the 1960s
type: TEMPORAL
Source sentences:
text: Due to the widespread use of pesticides such as DDT, illegal hunting practices and the destruction of their natural habitats by human activity, the numbers of these majestic birds of prey fell down to a mere 400 in the 1960s.