Acanthiza uropygialis
The Chestnut-rumped Thornbill (Acanthiza uropygialis) is a quintessential "little brown bird" of Australia's arid interior, yet its distinctive chestnut rump provides a striking and reliable identification mark. Measuring a mere 9-11 cm in length and weighing just 6-8 grams, this tiny passerine boasts drab brown upperparts contrasting with a pale, whitish underside. Its fine, pointed bill is adapted for insect foraging, and a pale cream or white iris lends it a perpetually wide-eyed appearanc...
Primarily inhabiting arid and semi-arid regions of inland Australia, the Chestnut-rumped Thornbill thrives in mallee, acacia shrublands, and open woodlands, typically at low to moderate elevations. It favors habitats with a shrubby understory, often incorporating saltbush or mulga.
The Chestnut-rumped Thornbill is primarily insectivorous, consuming a wide variety of small insects and spiders gleaned from foliage, bark, and the ground. Its fine, pointed bill is perfectly adapted for extracting tiny invertebrates.
Chestnut-rumped Thornbills are active, diurnal birds, typically foraging from dawn until dusk, often roosting communally in dense vegetation. Their foraging strategy involves actively gleaning small insects and spiders from foliage, bark, and occasionally the ground, employing quick, agile moveme...
The Chestnut-rumped Thornbill is widely distributed across the arid and semi-arid interior of Australia, predominantly a resident species with no significant migratory movements. Its extensive breeding range spans from central Queensland, through much of inland New South Wales and Victoria, acros...
Least Concern
- The Chestnut-rumped Thornbill is often considered an iconic "little brown job" (LBJ) of the Australian interior, challenging birders with its subtle beauty. - Its most distinctive feature, the chestnut-red rump, is often only clearly visible in flight or when the bird is actively moving, requir...