Bilby

The bilby is a nocturnal, burrowing marsupial recognisable by its long, rabbit-like ears, silky blue-grey fur, and elongated snout. It uses powerful forelimbs and claws to dig extensive burrow systems, which provide shelter from extreme temperatures and predators. As an omnivore, it forages for insects, larvae, bulbs, fruit, seeds, and fungi, and its digging activity aerates soil and promotes seed dispersal and water infiltration, making it an important ecosystem engineer in Australia's arid and semi-arid landscapes.

Historically widespread across much of the Australian mainland, the bilby's range has contracted significantly, and it now persists in fragmented populations across parts of Western Australia, the Northern Territory, and Queensland, occupying forest, shrubland, and grassland habitats, particularly arid and semi-arid spinifex and acacia woodlands.

Predation and habitat degradation from livestock grazing have reduced food availability and damaged burrow sites. Introduced predators, particularly foxes and feral cats, have driven substantial declines by preying on bilbies directly. Altered fire regimes, including more frequent and intense wildfires, have destroyed vegetation cover and food sources, while logging and land clearing have further fragmented suitable habitat.

Conservation efforts include predator-proof exclosures and fenced reserves, translocation and reintroduction programs into former range areas, feral predator control programs targeting cats and foxes, and captive breeding initiatives that support wild population supplementation. Fire management practices, including controlled burning regimes, have also been implemented in some regions to protect remaining habitat.

Despite these interventions, the species' population continues to decline overall, with survival increasingly dependent on managed, predator-free sites rather than unprotected wild landscapes. Without sustained and expanded predator control, the long-term trajectory remains one of continued range contraction.