Assertion: vulture's population | /r/CapableOf | expand since 1940
Facets:
value: according to hawk mountain sanctuary
type: OTHER
value: northward
type: LOCATION
Source sentences:
text: The range and population of the black vulture, which is also known as the black buzzard and carrion crow, has been expanding northward since the 1940s, according to Hawk Mountain Sanctuary.