“A sugar glider is a marsupial, not a flying squirrel — the two look alike because of convergent evolution.”
Sugar gliders are small nocturnal marsupials that glide between forest trees on a skin membrane. They eat sap, nectar, and insects across eastern Australia and New Guinea.
By An Nguyen · Updated
Petaurus brevicepsDiprotodontiaPetauridae
Browse sugar glider photographs—from forest feeding and family groups to joeys and the membrane used for gliding.
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Core article
A closer look at habitat, diet, behavior, reproduction, and conservation.
The sugar glider (Petaurus breviceps) is a pocket-sized nocturnal marsupial that turns forest gaps into flight paths. Stretching a thin skin membrane between wrists and ankles, it launches from a high branch, glides more than a football field if the landing tree is far enough, and sticks the landing with sharp claws. Despite the common mix-up it is not a flying squirrel — sugar gliders are pouched mammals more closely related to kangaroos and wombats than to any rodent, and they spend their days packed into tree hollows and their nights ranging the canopy for sap, nectar, pollen, and insects across the forests of Oceania.
An adult is 5 to 8 inches in head and body plus a long, bushy, rudder-like tail, weighing 3 to 5.5 ounces, in soft gray fur with a dark nose-to-back stripe and a cream belly. The defining structure is the patagium, a stretchy skin membrane that fans out when the limbs spread, and powerful claws with partly opposable digits let it cling to bark, grab food, and climb headfirst down trunks; huge dark eyes gather night light while mobile ears track insect rustles and owl wingbeats. Males carry a bald scent-gland patch on the forehead, and colony members use chest and cloacal glands to label their nest hollows. Sugar gliders belong to the order Diprotodontia, alongside kangaroos, koalas, and wombats (unlike the egg-laying platypus), in the family Petauridae — their gliding a textbook case of convergent evolution with the unrelated flying squirrels.
Sugar gliders inhabit forest and woodland from open eucalypt stands to rainforest edges, across eastern and northern Australia, much of New Guinea, and some nearby islands. Daytime shelter depends on hollow-bearing trees — natural cavities or old nests that stay dark, humid, and insulated. Because they rarely leave the canopy for long, forest structure matters as much as plant species: continuous branches, snags, and feeding trees create safe glide paths and reliable food, and where logging removes mature hollow trees, gliders persist only if connecting corridors and nest boxes remain.
Sugar gliders are active omnivores. Much of their energy comes from sugary plant products — eucalypt and acacia sap, flower nectar, and pollen — which is where the "sugar" in the name comes from, supplemented by insects, spiders, and occasional soft fruit. At night they move along familiar routes between feeding trees, often following the group's scent marks, using sharp lower incisors to open bark and reach sticky sap, and adding insect protein when blossoms are scarce; by getting moisture from food they reduce risky trips to open water.
Sugar gliders are highly social, a group sharing one or more nest hollows, piling together for warmth, and defending a feeding territory, grooming each other and recognizing colony odor. They are strictly nocturnal and communicate with soft hisses, chirps, and a crab-like "crabbing" alarm call. Owls, snakes, goannas, quolls, and introduced cats are the main predators, so quick retreats into hollows and shared canopy vigilance are daily survival tools — a different solution from the daytime sentries of social specialists like meerkats.
Breeding timing shifts with rainfall and food, but a female usually produces one or two young after a gestation of only about 16 days. As in other marsupials, newborns are tiny and unfinished: each joey crawls into the pouch, attaches to a teat, and develops for roughly two months before emerging, then stays with the mother and group learning climbing routes and glide launches. Many reach sexual maturity in under a year, and wild lifespans are commonly 4 to 7 years, more than a decade in good care.
The sugar glider is Least Concern with a broadly stable trend across its large Oceania range. Local threats still matter: clearing mature woodland removes the hollows and flowering trees it needs, cats and fragmentation raise predation and isolation, and pet-trade demand can pressure wild-caught animals in some regions. Conserving connected forest with older trees is the most direct way to keep wild glide paths open.
Kingdom
Animalia
Phylum
Chordata
Class
Mammalia
Order
Diprotodontia
Family
Petauridae
Genus
Petaurus
Species
P. breviceps
A sugar glider is a marsupial, not a flying squirrel — the two look alike because of convergent evolution.
The gliding membrane stretches from wrist to ankle and can carry the animal more than 150 feet between trees.
Males have a bald forehead patch that is a scent gland used to mark family nest hollows.
Sugar gliders get much of their water from sap, nectar, and juicy foods rather than open drinking pools.
A group often sleeps piled together in a tree hollow during the day to stay warm.
Their large eyes and swiveling ears help them find insects and avoid owls in the dark canopy.
Select a question to reveal the answer.
A sugar glider is a small nocturnal marsupial from Oceania. It glides between trees using a skin membrane and raises joeys in a pouch.
Sugar gliders live in forest and woodland habitats across eastern Australia, New Guinea, and nearby islands.
They are omnivores. Their diet includes tree sap, nectar, pollen, fruit, insects, and spiders.
A membrane called a patagium stretches between the front and hind limbs. Launching from a high branch, the animal spreads its limbs and steers with its tail.
A baby sugar glider is called a joey. After a short pregnancy, the joey crawls into the pouch and finishes developing there.
Yes. They live in family groups that share nest hollows, groom one another, and defend a feeding territory.
Sugar gliders are listed as Least Concern, but local populations can still decline where forests are cleared or hollow-bearing trees are lost.
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