Assertion: nuthatch's population | /r/CapableOf | experience a decline of about 28%
Facets:
value: between 2015
type: TEMPORAL
value: between 1966
type: TEMPORAL
Source sentences:
text: Conservation Violet-green Swallows are common throughout the West, but populations experienced a decline of about 28% between 1966 and 2015, according to the North American Breeding Bird Survey.