The slender-billed thornbill (Acanthiza iredalei) is a small bird native to Australia.

It rarely feeds on the ground, preferring instead the higher elevations of shrubs and trees.

Females lay up to three eggs during the breeding season, which runs from July until November.

Its underbelly is a smooth cream colour, and it has a dark bill and pale eyes.

[4] The hedleyi subspecies is found in southeastern South Australia and western Victoria, and the rosinae subspecies is most commonly found in the Gulf St Vincent region of South Australia.