Acanthiza inornata
The Western Thornbill (*Acanthiza inornata*) is a small, unobtrusive passerine endemic to the southwestern corner of Western Australia. Measuring approximately 9-11 cm in length and weighing around 7-9 grams, it exhibits a largely plain grey-brown plumage, typically paler on the underparts with a buffy wash on the belly. Its crown and upperparts are a uniform olive-brown, contrasting subtly with a paler face and indistinct eye-ring. Distinctive field marks include its relatively unmarked appe...
This species primarily inhabits eucalypt forests and woodlands, mallee, and dense scrublands, favoring areas with a rich understory. It is typically found at low to moderate elevations, adapting to a range of forest types.
The Western Thornbill's diet consists predominantly of small arthropods, including insects, larvae, and spiders, which it primarily gleans from foliage and bark. It occasionally supplements its insectivorous diet with small seeds.
Western Thornbills are active diurnal foragers, primarily gleaning insects and spiders from the foliage and bark of trees and shrubs, often moving with agility through the canopy and mid-story. They are generally monogamous, forming strong pair bonds and often engaging in cooperative breeding, wh...
The Western Thornbill is strictly endemic to the southwest of Western Australia, maintaining a relatively restricted but stable distribution. Its range extends from the northern Wheatbelt and Shark Bay region, southwards along the coast and inland through the jarrah and karri forest belts, to the...
Least Concern
- The "inornata" in its scientific name *Acanthiza inornata* literally means "unadorned" or "plain," perfectly describing its subtle, unstreaked plumage compared to its relatives. - It is one of the most common and widespread small passerines within its restricted range in Southwestern Australia....