Assertion: condor's number | /r/CapableOf | dwindle to only 22 birds
Facets:
value: by 1982
type: TEMPORAL
Source sentences:
text: However, the settlement of the West led to a massive decline in the condor population -- from shooting, the synthetic pesticide DDT and egg collection -- and by 1982, their number had dwindled to only 22 birds [source: NPS].