(Last Updated On: April 15, 2021)

Leadbeater’s Possum inhabits lifeless and decaying bushes, a lot of that are crammed with considerable insect populations. As the main predator of tree-dwelling bugs, the possum limits the insect effect within the ecosystem.

The highland inhabitants of the Leadbeater’s Possum live primarily within the ash forests and sub-alpine woodlands of Victoria’s Central Highlands.

Leadbeater’s Possum profile

Leadbeater’s possum, scientific name Gymnobelideus leadbeateri is a critically endangered possum largely restricted to small pockets of alpine ash, mountain ash, and snow gum forests within the Central Highlands of Victoria, Australia, north-east of Melbourne.

It is primitive, relict, and non-gliding, and, as the one species within the petaurid genus Gymnobelideus, represents an ancestral type.

Formerly, Leadbeater’s possums have been reasonably frequent inside the very small areas they inhabited; their requirement for year-round meals provides and tree-holes to take refuge in through the day restricts them to mixed-age moist sclerophyll forest with a dense mid-story of Acacia.

The species was named in 1867 after John Leadbeater, the then taxidermist on the Museum Victoria. They additionally go by the frequent name of fairy possum. On 2 March 1971, the State of Victoria made the Leadbeater’s possum its faunal emblem.

Immediately after being born, younger Leadbeater’s Possums are transferred to the mom’s pouch. Here, the poorly developed younger keep an average of 85 days. At about three months, the defenseless younger enterprise out of the nest for the first time to forage.

Weaning takes place between 10 to 15 months after being born, with females leaving sooner than males. Leadbeater’s Possum is absolutely mature by age two (Massicot, 2001).

Because younger are extraordinarily altricial, moms cover most facets of parental care of their pouches. Here, the mom can present the wealthy milk wanted for fast growth in addition to safety from outdoor risks.

Leadbeater's Possum

Geographic Range

Gymnobelideus leadbeateri, or Leadbeater’s Possum, is strictly confined to a distant area in Victoria, Australia. It inhabits a range of solely about 3500 sq. kilometers within the highlands of Victoria. Leadbeater’s Possum is among the most remoted marsupials within the wild.

Leadbeater’s Possum Habitat

Leadbeater’s Possum lives within the highlands of Victoria between altitudes of 500 and 1500 meters. The local weather is cool and harsh and receives copious quantities of precipitation, a few of which falls as snow through the winter.

High annual precipitation quantities mix with cool temperatures to provide an open forest characterized by various species of tall, straight Eucalypt bushes. In specific, Leadbeater’s Possum prefers to nest within the Mountain Ash.

The steep terrain discovered within the highlands limits inhabitants’ size because it has been estimated that solely 6.7% of the forest is appropriate nesting habitat.

A vital attribute of the bushes wherein Leadbeater’s nests in is that they should be lifeless or hole. Typically, these “nesting trees” take over a hundred years to grow to be appropriate environments for the possum.

Leadbeater’s Possum Physical Description

Leadbeater’s Possum could be very related in size and construction to the opposite sugar glider marsupials within the family Petauridae. It is usually gray-brown with a definite darkish stripe working the size of the back.

The shade on the underside is pale in comparison with the darker dorsal facet. As typical of different Australian possums, a pouch used to harbor the dwell younger is inconspicuous on the underside of the animal.

Upon reaching maturity, Leadbeater’s Possum has an average mass of about 135 grams. Although the average size is 300 mm upon reaching maturity, almost half of this size is accounted for by a long tail.

Leadbeater’s Possum is the one member of its family and not using a gliding membrane, an undeniable fact that leads researchers to imagine that Leadbeater’s Possum is a primitive member of the group.

Leadbeater's Possum

Leadbeater’s Possum Behavior

Leadbeater’s Possum lives a nocturnal, sedentary life. Usually, teams of around 4-8 people inhabit a given nest. This group is consists of a monogamous pair of mature adults and their offspring.

Typically, the group maintains a defended territory starting from 2.5 to 7.5 acres in space. With his strict funding and attachment to 1 feminine, the male helps in defending the territory.

Atypical of most mammal social hierarchies, Leadbeater’s Possum societies are dominated by a feminine. In every group, just one adult feminine is present, and juvenile females are weaned nicely before they attain maturity.

Observations of two adult females dwelling in the identical nest often reflect an unstable group characterized by frequent preventing.

Another fascinating characteristic of this female-based society is that females are the aggressors, usually partaking in shows of violence towards different females and even their very own daughters.

As an outcome, younger females go away from the nest at a lot of youthful age in comparison with the younger males, which are tolerated to generally keep indefinitely (Smith, 1995). A direct consequence of such a society is the extraordinarily high male to the feminine ratio of three:1.

Leadbeater’s possums are not often seen as they’re nocturnal, fast-moving, and occupy the upper storey of a number of the tallest forest bushes on the earth. They have an average body size of 33 cm (13 inches) with the tail included.

They dwell in small family colonies of as much as 12 people, together with one monogamous breeding pair. Mating happens solely as soon as a year, with most of two joeys being born to every pair.

All members sleep collectively in a nest made out of shredded bark in a tree hole, wherever from 6 to 30 meters above ground level and roughly within the center of a territory of three hectares, which they defend actively.

The society of Leadbeater’s possums is matriarchal: every group is dominated by just one feminine Leadbeater’s possum that’s energetic in expelling outsiders. Other juvenile females are weaned off before they attain sexual maturity.

In addition, feminine Leadbeater’s possums are more aggressive in nature, usually partaking in frequent fights with different females, together with their very own daughters.

Due to the fixed assaults, younger females are pressured to depart a lot sooner than their male brothers, which ends up in the extraordinarily high male to the feminine ratio of 3:1.

Leadbeater's Possum

Solitary Leadbeater’s possums have a problem surviving: when younger males disperse at about 15 months of age, they have a tendency both to affix one other colony as a supernumerary member or to collect collectively into bachelor teams whereas they wait to discover a mate.

At nightfall, Leadbeater’s possums emerge from the nest and unfold out to forage within the sub-canopy, usually making substantial leaps from tree to tree (they require steady understory to travel).

Their diet is omnivorous: feeding on a range of wattle saps and exudates, lerps, and a high proportion of arthropods which they discover below the unfastened bark of eucalypts, together with spiders, crickets, termites, and beetles.

Plant exudates make up 80% of their energy consumption, however, the protein offered by the arthropods is important for profitable breeding.

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Leadbeater’s Possum Food Habits

The diet of Leadbeater’s Possum consists of two predominant staples, each of which comes from the vegetation and bushes within the atmosphere.

Near the nesting site, many species of bugs (beetles and crickets) and spiders could be discovered behind the bark of the three species of Eucalypt bushes.

Arthropods additionally could be obtained and utilized within the decaying logs and leaves that characterize the forest flooring. Other vital sources utilized by Leadbeater’s are the exudates and saps which can be produced by vegetation and a few bugs within the area. In reality, some estimates present that 80% of the everyday energy consumption comes straight from these sources.

Living in a temperate atmosphere, meals abundance varies seasonally. Typically, meals are considerable in the spring and summer season, particularly bugs and vegetation, and the entire possum’s energy necessities are often met.

During winter months, Leadbeater’s has been noticed consuming a species of cricket that shelters itself by dwelling behind the bark of the Mountain-Ash tree.

This capability to seek out protein within the absence of many different meals necessities could also be what permits Leadbeater’s Possum to breed in almost all months of the year


Young Leadbeater’s Possums are very inclined to assaults by owls. Like most marsupials, the younger are protected by being stored within the mom’s pouch for 3 months after they’re born.

Leadbeater's Possum

Leadbeater’s Possum Breeding

Births are often timed for the start of winter (May and June) or late spring (October and November). Most litters are of 1 or two younger, which keep within the pouch for 80 to 90 days, and first, emerge from the nest following this. Young, newly unbiased Leadbeater’s possums are very weak to owls.

Leadbeater’s Possum is monogamous, and younger of each sex are near all the time-displaced from the nest previous to reaching full maturity.

Similar to most marsupials in Australia, Leadbeater’s Possum has a really quick gestation interval. In reality, by no means has a gestation interval ever been noticed to be longer than 20 days. The younger are born extraordinarily altricial, and they’re shortly positioned into the pouch for defense and milk.

An interesting attribute of Leadbeater’s Possum is that it’s polyoestrus; the lack of a litter stimulates the instant manufacturing of one other litter.

Although categorized as a seasonal breeder, Leadbeater’s Possums have been noticed giving start in each month apart from January and February. The capability to breed each winter month appears to be a direct indicator that the energy requirement necessary for being pregnant could be met even below restricted situations.


Leadbeater’s Possum inhabits lifeless and decaying bushes, a lot of that are crammed with considerable insect populations. As the main predator of tree-dwelling bugs, the possum limits the insect effect within the ecosystem.

Leadbeater’s Possum Threats

Leadbeater’s possums and their forest habitat have been the subject of the most important longitudinal study of any species on the earth—carried out by David Lindenmayer, a professor at the Australian National University, and his analysis assistants since 1983.

Hundreds of peer-reviewed scientific papers, journal articles, and books have resulted from the years of knowledge assortment by the ANU team.

Their findings present that the supply of appropriate habitat is essential: forest should be neither too old nor too younger, with conservation efforts for Leadbeater’s possums involving the protection of remaining old-growth stands, and upkeep of youthful stands which can be allowed to achieve hollow-bearing age.

Clearfell logging and salvage logging (after bushfires) have been confirmed by the researchers to have been the best menace to the possums’ conservation within the wild during the last three many years of the 20th century.


As of 2013, Leadbeater’s possums are present in three habitat sorts: lowland swamp gum, of Yellingbo Nature Conservation Reserve; montane ash forest, moist sclerophyll forest dominated by mountain ash, shining gum and alpine ash with a dense mid-story of acacia species; sub-alpine woodlands of Mount Baw Baw, Lake Mountain, and Mount Bullfight.

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