Assertion: sparrow's population | /r/CapableOf | decline by about 1.4% per year
Facets:
value: between 1966
type: TEMPORAL
value: between 2015
type: TEMPORAL
Source sentences:
text: Conservation Dark-eyed Juncos are numerous and widespread, though the North American Breeding Bird Survey reports that populations declined by about 1.4% per year between 1966 and 2015, resulting in a cumulative decline of 50%.