An incredibly rare sighting of endangered brush-tailed rock-wallabies in the Grampians National Park has given conservationists hope of population growth.
Surveillance cameras caught the mob with joeys in their pouches, increasing the estimated number of the wallabies in the national park by four to 13.
Grampians Ark coordinator Derek Sandow said the latest sighting confirms the ongoing conversation work.
"It's incredibly exciting to see these endangered joeys that have been born in the wild from within this small colony," he said. "Our team has been working for a long time to protect these special animals, recently ramping up our conservation program to target foxes and feral cats in the national park.
"This a unique environment and home to a range of native animals, plants and birdlife - it's critical we protect the Grampians for future generations to enjoy."
The brush-tailed rock-wallaby was thought to be extinct in Victoria following extensive hunting for its meat and fur. The wallaby was rediscovered in 1937 and is now considered one of Victoria's most endangered mammals.
The last known brush-tailed rock-wallaby was removed from the Grampians in 1999 to join a successful breeding program with wallabies re-introduced in 2008.
Since their reintroduction to the Grampians, the wallabies have been carefully monitored and managed by Parks Victoria and its partners.
Part of the Grampians Ark conservation program is being funded by the state government's $33.67 million Biodiversity Response Planning and Weeds and Pests on Public Land initiative.
The only other known colony in Victoria is living in the Snowy River National Park.