Australia's elusive greater glider is actually three distinct species hiding in plain sight

Nature · Published 3 October 2026 Swipe more like this →

In short: Long mistaken for a single species, the greater glider is a trio of specialized marsupials. These nocturnal herbivores survive on a nutrient-poor diet of eucalyptus leaves, using unique gliding membranes to navigate forest canopies. Despite their shaggy appearance and cat-like size, these solitary creatures remain one of Australia's most mysterious endangered mammals.

Until 2020, researchers grouped all greater gliders under the name Petauroides volans. However, genetic and morphological analysis revealed three distinct species: the northern greater glider (Petauroides minor), the central greater glider (Petauroides armillatus), and the southern greater glider (Petauroides volans). These animals are not closely related to other famous gliding marsupials like the sugar glider; instead, they share a lineage with the lemur-like ringtail possum, diverging from their closest relatives about 18 million years ago.

These marsupials are highly specialized for an arboreal life, feeding almost exclusively on eucalyptus leaves and buds. Because this diet is low in nutrients and high in fiber, they rely on a specialized caecum filled with bacteria to ferment their food. They are not well-adapted to heat and struggle with water conservation, often cooling themselves by licking their own bodies. Their gliding mechanism is also distinct: while other gliders have membranes stretching from wrist to ankle, the greater glider’s membrane connects the elbow to the ankle, creating a unique triangular silhouette in flight.

Solitary and nocturnal, these gliders inhabit up to twenty different dens within their home range, typically choosing hollowed trees. They are notoriously difficult to track, often detected by the reflection of their eyes in spotlights. Today, all three species are listed as endangered across their range in eastern Australia. Their survival is tied to specific old-growth forest habitats, particularly those containing manna gum and mountain gum, making them sensitive indicators of forest health in a changing environment.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?

Related

• The sugar glider is not the widespread Australian icon you likely think it is.
• Why Australia's Possums Are Not Actually Related to the Opossums of the Americas
• The koala and the wombat are the last survivors of a lost marsupial empire
• Meet the pademelon, the tiny, elusive marsupial hiding in Australia’s dense forest undergrowth.
• Tree-kangaroos are the only macropods that traded the Australian bush for the canopy
• Grebes look like ducks and loons but their nearest kin are flamingos
• Great whites are warm-blooded migrants with three ocean clans
• Every tree and flower on land is technically a branch of green algae
• The great white pelican's name means a bird that brays like a donkey
• Green beans lost their strings thanks to one New York breeder in 1894
• How North America's tallest dunes formed in the shadow of the Sangre de Cristo Mountains
• Green iguanas fall fifty feet unhurt and see ultraviolet light

More in Organisms · More in Nature · Latest · A–Z · All topics