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King Island Brown Thornbill


Acanthiza pusilla subsp. archibaldiKing Island Brown Thornbill

Group:Chordata (vertebrates), Aves (birds), Passeriformes (perching birds), Acanthizidae (Australasian warblers)
Status:Threatened Species Protection Act 1995: endangered
Environment Protection and Biodiversity Conservation Act 1999: Endangered
Found only in Tasmania
Click to enlarge
The King Island brown thornbill is a subspecies of the common brown thornbill. It is a small bird about 11.7 cm long weighing 7.7 grams. Unlike the closely related Tasmanian thornbill it has a white rump and a distinctively long bill up to 16.2 mm. The species is endemic to King Island and is seldom seen but is probably easily confused with the Tasmanian thornbill which also occurs on King Island. The King Island brown thornbill is most likely to be found in native forest, woodland and teatree where it feeds on insects. Breeding is thought to be from September to December. The nest is a small dome shaped structure in low vegetation.
Threats come from the removal and degradation of native forest by clearing, burning and draining of swamp thickets. Exotic predators are also a threat.

A complete species management profile is not currently available for this species. Check for further information on this page and any relevant Activity Advice.​

Key Points

  • Important: Is this species in your area? Do you need a permit? Ensure you’ve covered all the issues by checking the Planning Ahead page.
  • Important: Different threatened species may have different requirements. For any activity you are considering, read the Activity Advice pages for background information and important advice about managing around the needs of multiple threatened species.



Helping the species


Cutting or clearing trees or vegetation










Changing water flow / quality


Use of chemicals




Further information

​Check also for listing statement or notesheet pdf above (below the species image).

​​Cite as: Threatened Species Section (). (): Species Management Profile for Tasmania's Threatened Species Link. ​ ​Department of Natural Resources and Environment Tasmania. Accessed on .

Contact details: Threatened Species Section, Department of Natural Resources and Environment Tasmania​, GPO Box 44, Hobart, Tasmania, Australia, 7001. Phone (1300 368 550).

Permit: A permit is required under the Tasmanian Threatened Species Protection Act 1995 to 'take' (which includes kill, injure, catch, damage, destroy and collect), keep, trade in or process any specimen or products of a listed species. Additional permits may also be required under other Acts or regulations to take, disturb or interfere with any form of wildlife or its products, (e.g. dens, nests, bones). This may also depend on the tenure of the land and other agreements relating to its management. ​​​​​