Amytornis rowleyi
The Opalton Grasswren (Amytornis rowleyi) is a small, highly cryptic passerine discovered relatively recently in 2018, having previously been considered a population of the Thick-billed Grasswren (*Amytornis textilis*). Measuring around 17-18 cm in length and weighing 20-25 grams, this species is characterized by its heavily streaked dark rufous-brown upperparts and whitish underparts, marked with fine black streaking. Its most distinctive field marks include a prominent white supercilium (ey...
This species is an obligate resident of arid spinifex (Triodia) hummock grasslands, typically found on stony hillsides, rocky outcrops, and gorges in Australia's interior. It prefers dense, mature spinifex that provides ample cover and foraging opportunities.
The diet of the Opalton Grasswren primarily consists of insects, including ants, beetles, and their larvae, supplemented with seeds, particularly during drier periods. They forage by gleaning and probing within dense spinifex and leaf litter.
The Opalton Grasswren is an exceptionally secretive and terrestrial bird, spending almost all its time hidden deep within dense spinifex clumps, rarely taking flight for more than short distances. Its primary mode of movement is running swiftly through the vegetation, often with its long tail hel...
The Opalton Grasswren is endemic to a highly restricted area of west-central Queensland, Australia. Its known distribution is centered around the Opalton and Winton regions, specifically inhabiting the arid plains and low rocky ranges dominated by dense hummock grasslands. This species is non-mig...
Data Deficient
- The Opalton Grasswren was only formally described as a distinct species in 2018, highlighting that new bird species can still be discovered in well-explored regions. - Prior to its description, it was considered a distinctive population of the Thick-billed Grasswren, *Amytornis textilis*. - It ...