When he rediscovered the elusive night parrot in 2013, John Young became a hero in the bird world.

But his reputation is now in tatters after the veracity of his latest fieldwork was criticised by a panel of experts.

Did the charismatic naturalist fake evidence of the green and yellow feathered creature?

Ann Jones investigates a scandal that threatens to undermine conservation efforts.

This is a repeat of a program that aired in March 2019.