60 regent honeyeaters have been released as a part of a captive breeding program in the fight to save the species.
With only 300 of the species left in the world, the release of 20 per cent of their entire population in the Hunter Valley will assist in saving the birds from extinction.
Birdlife Australia says the program works, with birds released in 2017 recently being spotted nesting.
The birds were released on Wonnarua country, on land owned by Mindaribba Local Aboriginal Land Council, within the Kurri Kurri and Cessnock Woodlands.