The Animal Rescue Craft Guild's Facebook page has since been flooded with posts from people around the world who stepped up to help.

More than 1 billion animals are estimated to have died in the devastating wildfires that began late last year, an expert said Wednesday.

More than 800 million of those animals are estimated to have been killed in New South Wales alone, according to a statement from The University of Sydney.

\"It's events like this that may well hasten the extinction process for a range of other species,\" Professor Chris Dickman, of The University of Sydney and the expert who made the estimate, told National Public Radio.

\"PHOTO:
Christina Simons/The New York Times via Redux
PHOTO: A woman feeds a young kangaroo wrapped in a makeshift pouch at the Raymond Island Koala and Wildlife shelter on Raymond Island in Australia, Jan. 6, 2020.
>

The wildlife that has survived, by either fleeing or going underground, will face immense difficulties once they return to their natural habitat, according to Professor Dickman.

The resources they once lived off of will no longer be there to support them, he said.

Relief organizations have shared photos of the rescued animals, including some of them in the types of pouches and protective gear that volunteers are making.

ABC News' Ginger Zee and Ella Torres contributed to this report.

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