A pair of Leadbeater’s possums carry the fate of their species with them as they explore a protected area that has been prepared just for them for years.

Leadbeater’s possum (Gymnobelideus Leadbeateri) is a small arboreal marsupial, nocturnal and extremely rarenative to the forests of the state of Victoria, Australia. It is considered a symbol of the local fauna, known for its agility and for living in dense eucalyptus forests.

It is a small mammal, weighing between 100 and 165 grams, with brownish-gray fur and a characteristic dark stripe on its back.

According to , the chances of the species surviving extinction are high, at least in the wild, but this duo is doing everything that can be expected when caring for newborn twins, having survived personality differences and to genetic separation to reproduce.

O Leadbeater’s possum It was already considered extinct, as no living specimens were seen between 1909 and 1961.

Its distribution area has always been small and the forests it calls home have been devastated by logging and mega-fires. The lack of sightings ended up partially reflecting its small size (33 centimeters, or 13 inches, including its large tail) and nocturnal habits.

However, the opossum remains critically endangeredwith any hope of survival dependent on a breeding program administered by Zoos Victoria.

Either because they are the faunal emblem of the state of Victoria, or because they are absolutely adorablethe program has many more resources than many species receive and benefits from largest longitudinal study of animals in the world.

Unfortunately, the team is faced with the fact that tiny, isolated populations of the opossum lack diversity.

Consequently, the discovery of another colony of Leadbeater’s possums in 1986 in the Yarra Ranges was a particularly good news.

These opossums live at a lower altitude than other survivors. Although not different enough to be considered a separate species, lowland Leadbeater’s have some genetic and behavioral differences relative to their (slightly) more common highland cousins.

“Highland possums can be quite aggressive”, these Nicole Boysfrom Healesville Sanctuary. “I found that the ones in the lowlands are a little calmer.”

As a matriarchal speciesthis raised questions about whether the male lowland Mercury could bond with the highland Narvi, but Boys’ team considered the mixture of their genes the best hope of the species.

O pair was bred in captivitybefore being released last June in the Coranderrk Nature Conservation Area, a habitat plain next to the Healesville Sanctuary, which was clean of predators and prepared for possums.

Recently, breeders were pleased to notice a bulge in Narvi’s pouchsignaling the presence of puppies, and even more satisfied when witnessing the care that the couple is taking.

“Mercury has been taking great care of the twins,” Boys said. “It kept them warm while Narvi was foraging for food. Being a nursing mother is hard work.”

This is particularly important because the Leadbeater’s possums are cooperative breeders who live in small family groups.

One monogamous pair reproduces the familybut others, usually the older children help take care of the young until they are considered a threat and are expelled to follow their own path.

Like giant pandas and kākāpō, Leadbeater’s opossums sometimes appear determined not to be saved.

The largest species of Australian possums adapted to city life with gustobut those of the plains live in swampy tangles of trees that have been compared to something out of a Tolkien novel.

Both populations can only survive in medium-aged forests. After fires or tree cutting, the forest lacks the nesting sites that Leadbeater’s need to breed.

This is a common problem for many animals, but Leadbeater’s possums are unusual in that depend on foods that are rare in ancient forests.

When your habitat ages outside the critical window, or undergoes a new disturbance, they need to quickly find new territory.

Zoos Victoria has planted almost 140,000 treesfor a decade, for a planned release of Leadbeater.

They accelerated the preparation of the conservation area by providing boxes that can be used as nesting sitesand are also leaving food to supplement what Mercury and Narvi can forage in the wild.

This luxurious possum space is expected to soon have more than just four residents.

Although mixing of highland and lowland genes is considered essential to avoid inbreeding, the lowland population is probably better adapted to the Healesville area, especially as temperatures rise.

Boys said it’s likely the team will try to breed Mercury and Narvi’s descendants with other lowlanders, rather than maintaining an even genetic mix.

Another obstacle to the survival of Leadbeater’s possums is that the matriarchal nature of family dynamics means that females tend to be expelled from a colony earlier than males, often when they are least likely to survive.

This fact creates very distorted sex ratios in naturebut provides an opportunity for Zoos Victoria staff to support young women during this dangerous early period.

A pair of Leadbeater’s possums carry the fate of their species with them as they explore a protected area that has been prepared just for them for years.

Leadbeater’s possum (Gymnobelideus Leadbeateri) is a small arboreal marsupial, nocturnal and extremely rarenative to the forests of the state of Victoria, Australia. It is considered a symbol of the local fauna, known for its agility and for living in dense eucalyptus forests.

It is a small mammal, weighing between 100 and 165 grams, with brownish-gray fur and a characteristic dark stripe on its back.

According to , the chances of the species surviving extinction are high, at least in the wild, but this duo is doing everything that can be expected when caring for newborn twins, having survived personality differences and to genetic separation to reproduce.

O Leadbeater’s possum It was already considered extinct, as no living specimens were seen between 1909 and 1961.

Its distribution area has always been small and the forests it calls home have been devastated by logging and mega-fires. The lack of sightings ended up partially reflecting its small size (33 centimeters, or 13 inches, including its large tail) and nocturnal habits.

However, the opossum remains critically endangeredwith any hope of survival dependent on a breeding program administered by Zoos Victoria.

Either because they are the faunal emblem of the state of Victoria, or because they are absolutely adorablethe program has many more resources than many species receive and benefits from largest longitudinal study of animals in the world.

Unfortunately, the team is faced with the fact that tiny, isolated populations of the opossum lack diversity.

Consequently, the discovery of another colony of Leadbeater’s possums in 1986 in the Yarra Ranges was a particularly good news.

These opossums live at a lower altitude than other survivors. Although not different enough to be considered a separate species, lowland Leadbeater’s have some genetic and behavioral differences relative to their (slightly) more common highland cousins.

“Highland possums can be quite aggressive”, these Nicole Boysfrom Healesville Sanctuary. “I found that the ones in the lowlands are a little calmer.”

As a matriarchal speciesthis raised questions about whether the male lowland Mercury could bond with the highland Narvi, but Boys’ team considered the mixture of their genes the best hope of the species.

O pair was bred in captivitybefore being released last June in the Coranderrk Nature Conservation Area, a habitat plain next to the Healesville Sanctuary, which was clean of predators and prepared for possums.

Recently, breeders were pleased to notice a bulge in Narvi’s pouchsignaling the presence of puppies, and even more satisfied when witnessing the care that the couple is taking.

“Mercury has been taking great care of the twins,” Boys said. “It kept them warm while Narvi was foraging for food. Being a nursing mother is hard work.”

This is particularly important because the Leadbeater’s possums are cooperative breeders who live in small family groups.

One monogamous pair reproduces the familybut others, usually the older children help take care of the young until they are considered a threat and are expelled to follow their own path.

Like giant pandas and kākāpō, Leadbeater’s opossums sometimes appear determined not to be saved.

The largest species of Australian possums adapted to city life with gustobut those of the plains live in swampy tangles of trees that have been compared to something out of a Tolkien novel.

Both populations can only survive in medium-aged forests. After fires or tree cutting, the forest lacks the nesting sites that Leadbeater’s need to breed.

This is a common problem for many animals, but Leadbeater’s possums are unusual in that depend on foods that are rare in ancient forests.

When your habitat ages outside the critical window, or undergoes a new disturbance, they need to quickly find new territory.

Zoos Victoria has planted almost 140,000 treesfor a decade, for a planned release of Leadbeater.

They accelerated the preparation of the conservation area by providing boxes that can be used as nesting sitesand are also leaving food to supplement what Mercury and Narvi can forage in the wild.

This luxurious possum space is expected to soon have more than just four residents.

Although mixing of highland and lowland genes is considered essential to avoid inbreeding, the lowland population is probably better adapted to the Healesville area, especially as temperatures rise.

Boys said it’s likely the team will try to breed Mercury and Narvi’s descendants with other lowlanders, rather than maintaining an even genetic mix.

Another obstacle to the survival of Leadbeater’s possums is that the matriarchal nature of family dynamics means that females tend to be expelled from a colony earlier than males, often when they are least likely to survive.

This fact creates very distorted sex ratios in naturebut provides an opportunity for Zoos Victoria staff to support young women during this dangerous early period.