In a time of rampant biodiversity decline, it's heartening to consider that sometimes, when we set our minds to it, grand things can be achieved. For that is exactly what happened on sub-Antarctic Macquarie Island where a multi-million dollar eradication program saw the removal of rabbits, rats and mice in 2013. In the aftermath of this effort, beautiful things are emerging. Dr Justine Shaw from The University of Queensland is leading a TSR Hub project seeking to learn from this experience and monitor how ecosystems respond Here she explains what has happened.