Baby koalas arrive at the Australian Reptile Park

THEY'RE already dubbed the lucky seven, but keepers hope they could be a good luck charm for their species' survival.

The Australian Reptile Park has welcomed seven healthy koala joeys this season, boosting their conservation program.

"Sadly we're at a critical turning point for the future of koalas in the wild," Australian Reptile Park general manager Tim Faulker said.

"We are doing everything we can to ensure a future for what is arguably Australia's most iconic, native mammal and after the confirmation that we have seven joeys, we're feeling lucky."

The joeys join the population of 38 koalas at the park, a colony that is expanding amid plans to develop a project to bolster wild koala populations.

The present rate of decline puts koalas on track for extinction by 2050, with their population dropping a third in the 20 years between 1990 and 2010. The decline is attributed to habitat destruction and fragmentation, deforestation, car hits and dogs.