A wildlife volunteer on Kangaroo Island says he cries every day as he works around the clock desperately trying to save the animals stranded in the fire-torn bushland.

Kai Wild travelled to Adelaide to volunteer for the rescue operation at the end of January, lending his tree-climbing expertise to bring in injured koalas.

But he has described being overcome with emotion, claiming a lack of support services is leading to koala deaths that could have been prevented.

Kai Wild travelled to Adelaide to volunteer for the rescue operation at the end of January, lending his tree-climbing expertise to bring in injured koalas

A koala with burnt ears and singed fur awaits medical care

'Today was another extraordinarily full on day. I didn't cry during breakfast but I did cry in rage for what I think is the first time in my life,' he wrote on Saturday.

'Hang tight because the hospital is currently overflowing, Koalas are starting to starve and we can't afford to stuff this up.'

Kai Wild is among those helping to recover and rehabilitate the wildlife on the island.

Since arriving on January 30 he's helped to rescue a total of 18 koalas, including four orphaned joeys.

But four days in and he's described the struggle to deal with the devastation.

'While we were driving around this afternoon we found the thing that I have been dreading and the thing that I'm here to stop from happening,' he wrote.

'I've seen plenty of koalas that have burnt to death. 100s. I've seen koalas that are decomposing because they starved weeks ago but I haven't seen a koala that has died from starvation recently, in the time that I've been here. Until today.'

'I've seen plenty of koalas that have burnt to death. 100s. I've seen koalas that are decomposing because they starved weeks ago but I haven't seen a koala that has died from starvation recently, in the time that I've been here. Until today,' the volunteer wrote.

A pop up hospital was set up on Kangaroo Island, staffed by RSPCA and ADF vets, where koalas are being brought for triage

Several koalas sit among soft toys in a laundry basket after being rescued by volunteers on Kangaroo Island

He shared the tale in a plea for more support services, after finding the first body of a koala which survived the fires only to starve to death.

'So today I kind of realised that I'm the only one that's going to come out and put koala feed stations in these plantations where the koalas are about to starve,' he said.

'Even though there are organisations saying there are 120 people out here to feed the animals. Apparently the plantations are dangerous.'

'Apparently the trees that I've been climbing to rescue koalas from are too dangerous to stand here where I am now. To actually feed the starving koalas.'

Since arriving on January 30 Kai Wild has helped to rescue a total of 18 koalas, including 4 orphaned joeys

He took issue with publicity hundreds of volunteers were on the ground specifically helping to feed the wildlife, calling for better support and a green light to go back into the plantations deemed too dangerous.

'Something needs to happen differently to save the remaining koalas from starvation in the burnt plantations. The people that are here already working to do this in the many different ways are swamped.'

The fires which took hold of the island in January destroyed more than 210,000 hectares, about one third of the entire island.

Around 25,000 koalas are thought to have died, and there are fears for the survival of other key native species including the Island's glossy black cockatoo population and the Kangaroo Island dunnart.

Volunteers rescue a koala from a tree on Kangaroo Island