The Western Gerygone is a small bird about 10 cm long, and the sexes look alike. In Western Australia it gleans small insects from foliage in forests and woodlands.
It is about 10 cm long, with cinnamon brownish-grey plumage, an indistinct white eyebrow, and whitish underparts. A white band marks the base of the tail, and the sexes look alike.
It gleans small insects from the outer foliage of trees, usually high above the ground. It may also hover above a tree crown to catch insects in flight.
An extinction-risk assessment has not been added yet.