its most intense bushfire season on record. up to 3 billion animals were killed or displaced and huge swathes of their habitat were burnt. i'm nick lazaredes, and 18 months on, i've been travelling australia to discover how its wildlife is faring now. there's a complete removal of resources that wildlife needs. whether they eat leaves, flower, pollen, fungi, all those resources, the foodstuff is gone. but from the ashes of catastrophe, there are also signs of hope and new beginnings for some of australia's most iconic animals. yes, there were some casualties, but there was no species lost, and that is important.