Several bird species are threatened with 'extinction'. = Several bird species are 'on the brink of extinction'.
Mass 'extinctions' of prehistoric animals are known to have occurred.
the 'extinction' of all life in the region
(..) It was. And it was beautiful. Titan was like most planets. Too many mouths, not enough to go around. And when we faced extinction, I offered a solution. Genocide. But random, dispassionate, fair to rich and poor alike. They called me a madman. (..)2018 Avengers: Infinity War