Assertion: hummingbird's number | /r/CapableOf | decline by almost 1.5% per year
Facets:
value: between 2015
type: TEMPORAL
value: between 1966
type: TEMPORAL
Source sentences:
text: Conservation Broad-tailed Hummingbirds are numerous and fairly common, but their numbers declined by almost 1.5% per year between 1966 and 2015, resulting in a cumulative decline of 52%, according to the North American Breeding Bird Survey.