23 June 2025

WORLD FIRST LIVESTREAM REVEALS AMAZING NEW INSIGHTS INTO GREATER GLIDER BEHAVIOUR

A world first livestream from the hollow of endangered greater gliders has filmed stunning parental behaviour never before witnessed.

Native forest logging is one of the reasons greater glider numbers have declined by up to 80%. There is growing pressure on the New South Wales government to end native forest logging to save threatened species.

The stars of the 24/7 broadcast are Pip, a white-faced female, her partner Milo, a male with black fur and a white belly, and their joey Brimi (sex unknown) who has a similar colour pattern to Milo. A viewer nominated the name Brimi, which means night in the language of the Biripi people, and it received the most votes.

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A pair of endangered greater gliders in a freeze frame from the livestream. © Ana Gracanin
Exterior shot of a tree hollow containing a greater glider livestream.

A world-first livestream from inside the hollow of a greater glider family has filmed stunning parental behaviour never before witnessed.
The large hollow at a secret location in Tallaganda, NSW where the greater glider family lives. © David Gallan

Broadcast from a secret location in Tallaganda, NSW the livestream is the work of Dr Ana Gracanin from the Australian National University.

Greater gliders are often described as not having a prehensile tail – meaning their tail does not grip. But the livestream challenges that thinking.

“The camera captured Milo using his tail to grasp eucalyptus stems and carry them into the hollow for Brimi and then Brimi eating the leaves,” said Dr Gracanin.

“This unique behaviour had never been observed before, it’s also some of the first evidence for paternal care in the species. Watching the joey take its first few nibbles was adorable, with little bite marks left as it tasted leaves, one by one,” she said.

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Dad Milo carries leaves in for his joey Milo

A world-first livestream from inside the hollow of a greater glider family has filmed stunning parental behaviour never before witnessed.

The livestream stars mum, Pip; dad, Milo; and joey, Brimi (sex unknown).  Video of Milo carrying leaves into the hollow with his tail for Brimi to eat was a major discovery. Greater gliders are often described as having a tail that is not prehensile – meaning their tail does not grip. Milo’s behaviour challenges that thinking.

The other revelation is the amount of social interaction among family members. Pip, Milo, and Brimi groom each other, snuggle and even engage in what looks like play.
Dad Milo carries leaves in for his joey Milo © Ana Gracanin

The World Wide Fund for Nature-Australia, National Parks Association NSW, Wilderness Australia, and Social Justice Advocates of the Sapphire Coast have supported the project.

People from Australia, United Kingdom, United States, Germany, Canada, New Zealand, Netherlands, Denmark, Ireland and Italy have spent more than 10,000 hours watching the livestream, describing it as "magical" and their "favourite reality tv show". A lot of comments also expressed concern after learning the species is endangered.

On 2 October 2024, viewers saw Brimi emerge from Pip’s pouch and climb onto her back. Since then they’ve witnessed the baby grow to full size.

Dr Gracanin said one of the biggest surprises has been just how much social interaction occurs inside the hollow.

“Greater gliders are often thought of as solitary, but we've seen Pip, Milo, and Brimi grooming, snuggling, and even engaging in what looks like play.

“But the livestream is about more than watching cute animals—it’s a window into the importance of tree hollows and old-growth forests. Every night we get to witness something that would otherwise go unseen. That’s an incredible privilege. If people enjoy watching Pip, Milo, and Brimi, I’d encourage them to take action—support conservation efforts, speak up for native forests, and help protect the habitats that species like greater gliders rely on. Every bit of awareness and advocacy helps,” said Dr Gracanin.

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On 2 October 2024 the joey climbed onto mum’s back for the first time. © Ana Gracanin
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Dr Ana Gracanin takes a selfie from inside the hollow during maintenance on the livestream camera. © Ana Gracanin

WWF-Australia conservation scientist Dr Kita Ashman has studied greater gliders in Tallaganda and seen firsthand logging destruction in Tallaganda State Forest.

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“As the livestream has shown, greater gliders need a large hollow to shelter and raise their young. Destroy hollow bearing trees and you destroy greater gliders. It’s that simple,” Dr Ashman said.

“Greater glider trees are being logged by a government owned hardwood business that has lost nearly $90 million in the last four and a half years. Losing that much money to degrade habitat and hurt our unique wildlife is shocking.

“The NSW government needs to transition out of native forest logging to save greater gliders and other threatened species,” she said.

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Dr Kita Ashman among the destroyed greater glider habitat in Tallaganda State Forest
Dr Kita Ashman (Threatened Species & Climate Adaptation Ecologist, WWF-Australia) with a greater glider.\nWWF-Australia is partnering with The University of Sydney to deploy GPS collars on greater gliders to get one of the worlds first high-resolution looks into greater glider home ranges and habitat use in bushfire-impacted forests.
Greater Glider GPS Collaring, Tallaganda State Forest, NSW © Kailas Wild / WWF-Australia