And on Wednesday it was time for Malu, the 18-month-old koala to move into his new home.

Malu was released from the breeding enclosure into a "transitioning enclosure" in the Eucalypt Forest, a 16-hectare area at the reserve surrounded by a predator-proof fence.

There were gasps all round as team leader of the threatened species recovery program Nicole Hill introduced Malu to his new home. He's the second koala to be released from the program.

"The hope is that Malu will set up as his home range and then establish himself out here in the wider forest," Ms Hill said.

"What we're hoping will happen from here is that when we open the door Malu will start coming out and slowly explore more and more of this area."

Malu was born at Tidbinbilla as part of the breeding program. His parents were both brought to the reserve in 2013 from the Otway Ranges.

"The reason we have the small breeding population at Tidbinbilla is to supplement the wider eucalypt forest area where Malu is going," she said.

"It gives tourists the incredible opportunity to see these animals in a natural habitat."

Ms Hill said the transition was what it would happen in the wild - young koalas would disperse from their parents.

Earlier this year, another koala named Billa was released.

"Billa's release went really well, that was on the other side of the eucalypt forest and we had the same little enclosures that we'd hoped he would use to establish his own home range with," she said.

"We're still monitoring him every two weeks and he is staying right within that area."

Malu brings the koala population at the Eucalypt Forest to 10.