Australia has over 8000 islands. They are home to a huge proportion of Australia’s biodiversity and many threatened species. Islands provide refuge from threatening processes such as predation by invasive species including feral cats, foxes and invasive rodents. However, many of Australia's island species are threatened on Australia’s islands due to their naturally restricted distributions, i.e. being island species. One of the most successful conservation strategies for threatened species and island biodiversity is invasive species eradication. In our work at the Threatened Species Recovery Hub we have been investigating the role eradications play in protecting Australia's island biodiversity, and documenting success stories.