Keeping fingers crossed for them. I'm cross-posting the article to Aussie Enviro. I really liked finding out that

It will be some years before scientists know how many released frogs have survived to breed.

But the technique to find out is a very simple and noisy one.

"We're very lucky in that one of the characteristics of corroboree frogs is that they'll respond to a loud sound," Dr Hunter explained.

"So we essentially just walk around yelling out, 'Hey frog!' and if they're there they will yell back to us."

The male frogs are the ones that return the call in mating season, allowing scientists to then count the number of eggs in the male's nest and calculate an estimate for the female population.

Not sure if they still have it but Tidbinbilla's visitor centre used to have a tank with corroboree frogs in it, they really are tiny little things (much smaller than the impression I'd previously had of them). Never seen one in the wild but I've been around a bit of the Brindabellas and Firey Range so it does make one wonder how many I've been past.