Noisy Scrub-bird

Atrichornis clamosus is a small, elusive songbird belonging to one of the most ancient passerine lineages, Atrichornithidae, a family found only in Australia. It is more often heard than seen: males produce an extraordinarily loud, far-carrying call used to defend territory and attract mates, a trait reflected in the species' common name. The bird has dark brown upperparts, a barred tail, and a skulking manner, preferring to run through dense vegetation rather than fly, as its wings are short and weak.

It forages on the ground for insects and other invertebrates, playing a role in controlling invertebrate populations and cycling leaf litter within its habitat.

The species is restricted to small areas of southwestern Australia, occupying dense forest and shrubland understorey, as well as vegetation fringing wetlands such as swamps and bogs, where thick cover and moist conditions support its ground-dwelling lifestyle.

Its decline is linked to habitat clearance for livestock farming and ranching, logging, and broader ecosystem modification that fragments the dense understorey it depends on. Altered fire regimes, including both frequent burning and fire suppression, degrade habitat structure, while introduced predators and other invasive species pose ongoing pressure on populations confined to isolated pockets of suitable habitat.

Conservation efforts include habitat protection within reserves, fire management aimed at maintaining suitable vegetation structure, monitoring of known populations, and translocations to establish additional populations in protected areas, reducing the risk posed by a single catastrophic event.

The population trend is currently assessed as stable, reflecting the effectiveness of active management, though the species remains Endangered due to its restricted range and the continued presence of multiple ongoing threats.