The Year 4 student said she loves the cute and furry native critters, and wanted to help when she learned they were critically endangered. She and her family plan to take part in the 8th annual Ringtail Tally, a citizen science project surveying possums, starting April.

From Margaret River in Western Australia, Ella was inspired to donate after hearing a talk by Nature Conservation Margaret River Region (NCMRR) Environmental Education Officer Lauren Scanlon, said Ella's dad Gerhard Erasmus.

Ms Scanlon, works on Our Patch, a project educating local school children about nature and conservation.

"Ella was really inspired after hearing Lauren's talk at school," Mr Erasmus said. "She's very fond of animals and feels very strongly about conservation. She's already thinking about a career working with animals."

Ella said Lauren's talk made her feel sad about the possums' plight, but inspired her to help. She said she was pleased to give her pocket money to a good cause, while her friends thought her donation was "pretty cool".

"I really like possums because they can climb trees and they're nocturnal. We've got two at school and I've seen another one in the bush. When I grow up I definitely want to work with animals," she said.

Ms Scanlon said she was "blown away" when she learned that Ella wanted to donate a year's worth of pocket money.

"It was so heartening to hear that from her learning in the Our Patch program, Ella was inspired to make a difference," she said.

"Her donation will contribute to research and conservation right here in the Margaret River Region. Our Patch, with the support of local schools, is able to reach hundreds of young people across the shire.

"We hope that young people feel a real sense of understanding and connection to this very special place, and feel empowered to contribute to enhancing and protecting the natural environment.

"This unique program gets children out on country, to observe, learn and think about how they might protect these unique ecosystems."

It's estimated that the remaining population size in the wild is less than 8,000 mature individuals, with a decreasing trend. Recent research predicts there is a very high chance they could be extinct within 20 years if action to protect populations and their habitat isn't enacted immediately.

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Margaret River Montessori School principal Lisa Fenton said Ella embodied the school's ethos of "taking inspiration from learning and turning it into real action for the greater good of humanity and the world around us".

"The kids... are really passionate about the possums that live on our site, especially everyone's favourite, Jeff, who lives happily in the bush by our front office," she said.

"Thanks to Our Patch and the deep and rich learning that our staff take from their engagement with the program and embedding it into the rest of our school's learning activities, the children all understand, not only the reasons we care for our native plant life and preserve habitats, but actually how to carry out this custodianship and the importance of speaking up and sharing their knowledge with others as advocates for the wildlife in our area and beyond - just as Ella has done."

Register for the 2022 Ringtail Tally at natureconservation.org.au/ringtail-tally-2022