https://www.sciencealert.com/experts-announce-koalas-are-functionally-extinct-here-s-what-that-means
Experts Announce Koalas Are 'Functionally Extinct'. Here's What That Means : ScienceAlert
May 11, 2019 - Today the Australian Koala Foundation announced they believe "there are no more than 80,000 koalas in Australia", making the species "functionally extinct".
functionally extinct