Kangaroo Island koalas, kangaroos and pademelons are still being found alive in the charred Flinders Chase National Park and timber plantations more than a week after bushfires devastated the area.

Key points: More than 32,000 livestock animals were lost in the Kangaroo Island blaze

More than 32,000 livestock animals were lost in the Kangaroo Island blaze The Humane Society International has deployed a team to help recover injured wildlife

The Humane Society International has deployed a team to help recover injured wildlife Mayor Michael Pengilly has backed the proposed royal commission into the fire disaster

But animal welfare agencies hold grave concerns for their ongoing survival as starvation becomes a threat for those that made it through the bushfires.

It comes as the State Government on Sunday released the number of livestock that was lost on Kangaroo Island.

More than 32,000 livestock animals, mostly sheep, perished in the blazes.

Primary Industries and Regional SA (PIRSA) also stated 830 hives and 115 nucleus hives were destroyed.

Warning: This story contains graphic images

About 215,000 hectares and 24,000 hectares have been scorched on Kangaroo Island and in the Adelaide Hills respectively, as well as 143 homes lost across both emergency bushfires this season.

Three lives were lost across both devastating fires.

The Country Fire Service (CFS) is still working to strengthen containment lines across Kangaroo Island ahead of expected worsening conditions on Monday.

The Kangaroo Island bushfire on Saturday. ( ABC News: Michael Clements )

Humane Society International has deployed a three-person team — including one woman who flew over from the United States — to find survivors in the devastated national park and timber plantations.

"It's unbelievable out here — I can't even describe it, you can't walk 10 metres without there being another carcass," team member Evan Quartermain said.

'Not a single gum leaf can be found on the fireground'

He said the crew rescued two koalas on Saturday, delivering the injured animals to the Kangaroo Island Wildlife Park, and was keeping an eye on two others within the fireground.

"We rescued a kangaroo yesterday which was lying on its side … but when we got close, it hopped up and we could see that its paws were just bone," he said.

"It's been lying there for at least a week. It was quite distressed.

"We got it to the wildlife park as soon as we could for it to be euthanased because it would have been another week or two before it died of starvation or infection.

"Even around here, we've just seen a goanna, pademelons, echidna and kangaroos that appear to be going OK.

A koala which was rescued on Kangaroo Island. ( Supplied: ADF )

"But you could walk for two or three kilometres and there's not a single gum leaf for these koalas to eat. They're going to starve, even the ones that survived the burns."

"These plantations where the fire ripped through, they're well and truly burnt, so we're just scouting around for survivors. Walking through these plantations, all you can smell is smoke, ash and death.

"It's extremely emotional.

"There's entire families of koalas, pademelons, kangaroos all together on the ground, severely charred. And it's not even families, it's multiple species, all together."

As Mr Quartermain was speaking to ABC News, his team plucked another injured koala from the fireground.

Timber plantations 'exploded'

Late last week, Kangaroo Island Mayor Michael Pengilly criticised the island's forestry industry, saying the plantations exacerbated the spread of the bushfires.

"[The industry] promised the world and never delivered anything," he said.

"The pine trees are now three-four decades old — they've gone up like candles."

"But I can tell you that out on the ground, it doesn't matter if you're a farmer or a resident or if you're the most extreme environmental greenie, no-one wants them."

Kangaroo Island farmer Peter Murray said the plantations and farming were "not compatible" and one of them had to go.

"When they burn, the ferocity is something to be seen, to be believed. The flames were 100 foot [30 metres] high," he said.

"And the timber has oil in it which basically explodes."

Kangaroo Island Plantation Timbers director Shauna Black said 90 per cent of her plantation had been "touched by the bushfires".

She said the fires had provided a "clean slate" and the business would now decide how to best use its land in the future.

"I think timber and agriculture do work together because they're both agriculture; we farm trees, they farm sheep or crops, so we're all farmers," she said.

"Forestry is an integral part of many rural communities around Australia, and it was encouraged by all three levels of government in the 1990s."

A badly burnt sheep on Kangaroo Island after the devastating bushfires. ( ABC News: Casey Briggs )

Experts have also expressed concerns for the survival of some of Kangaroo Island's endangered species, including the dunnart, black glossy cockatoo and the Ligurian honey bee, which produces the purest strain of honey in the world.

Ecologist Pat Hodgens took to social media to confirm he had detected one dunnart on the island since the bushfires started on December 20.

"This is fantastic news but we must work hard to protect them from predation by feral cats and locate other remnant patches to find more survivors," he posted on social media.

Veterinarian Garnett Hall estimated about 30,000 koalas had perished on Kangaroo Island.

"When you look at the number of koalas we've actually got here — we've got about 60 that have been brought in from the fires," he said.

"Their survival rate was very low and that's to be expected. They were infernos. It's amazing some have survived but they have."

RSPCA shocked by impact on wildlife

Over the weekend, the RSPCA was given access to the Flinders Chase National Park, which was the worst hit part of the island.

"The numbers of animals that we were seeing that were already dead, that had been hit directly by the fire, were enormous," RSPCA veterinarian Gayle said.

The team found four injured koalas on Saturday, which were transported to the Kangaroo Island Wildlife Park in an armoured Army vehicle.

The eerie aftermath of the Kangaroo Island bushfires. ( ABC News: Brittany Evins )

Government sets up fund to regenerate habitat for wildlife

There were about 360 Kangaroo Island glossy black cockatoos living on the island, but about 50 per cent of their habitat was wiped out by the blazes.

The birds were close to extinction in 1995 but the population doubled following a successful recovery program.

The South Australian Government has joined forces with Nature Foundation SA to create a fund to re-establish habitat for devastated wildlife across firegrounds in South Australia.

Nature Foundation chair Jan Ferguson said the state had experienced "catastrophic loss" following the Kangaroo Island and Adelaide Hills bushfires.

"We need to harness good science and advice to ensure funds raised are put to use in the most important places and achieve the best possible outcomes for threatened and vulnerable plants and animals," she said.