Western Fieldwren is recorded from the Stirling Range in Western Australia. Milligan's original account describes it running through stony ground and singing from the ground or low bushes.
The original description gives grey-brown upperparts with fine dark streaks, an ashy-white throat and chest marked with black streaks, and paler lower underparts.
Milligan's field account describes it running through stony tracts in the Stirling Range and singing from the ground or a low bush.
An extinction-risk assessment has not been added yet.