Assertion: nuthatch's population | /r/CapableOf | decline by about 56%
Facets:
value: between 2015
type: TEMPORAL
value: between 1966
type: TEMPORAL
Source sentences:
text: Conservation Chestnut-backed Chickadees are common across their range but populations declined by about 56% between 1966 and 2015, according to the North American Breeding Bird Survey.