Off Track - Separate stories podcast

The sweet singing butcherbird has inspired symphonies, such is the clarity of its tone.

What does your world sound like? We asked, and you sent us earworms from planet earth. Close your eyes and take a trip.

Possum, tawny frogmouth, platypus, turtle, quoll, endangered devil and raven. No animal is immune to death on Tasmanian roads where 32 animals die every hour. This episode of Off Track has been selected from the archives.

It was thought that cane toads couldn't survive, and certainly couldn't breed as far south as Sydney. That thought was spectacularly wrong.

Does the decomposition of our loved ones make the soil unsuitable for some plants? And why do grave sites sink? This program has been drawn from the Off Track archives.

Preserving species that are both rare and elusive has led an Australian whale specialist to the Himalayas to search for big cat poo.

A daisy which flowers in bursts of yellow and orange is threatening Australia's environment and agriculture. Luckily two spaniels stand in its way.

From the murky waters of the Murray River emerges a rare monster with an underbelly of red berries and claws of ghostly white.

Pobblebonks outside a prison, cockies screaming bloody murder, a new holland honeyeater and a mystery frog. These sounds have been submitted from people all around the world - listen to what's happening in their backyard.