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
(..) in the plains of Africa. An upright ape, living in dust, with crude language and tools. All set for extinction. "I am become Death, the destroyer of worlds." There you go again, Mr. Quotable. There you go again. (..)2014 Ex Machina