- Botaurus poiciloptilus
- Mottled brown upperparts
- Buff underparts with dark brown stripes
- Pale throat
- Pale eyebrow
- Yellow eyes
- Straight, brownish-yellow bill
- Pale green feet and legs
Freshwater wetlands with tall, dense vegetation, particularly bullrushes.
The diet includes frogs, fish, spiders, insects and snails.
They build nests in secluded places in densely-vegetated wetlands on a platform of reeds; 6 olive-brown eggs are laid.
- Clements, JF. 2008. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2008. Ithaca: Cornell Univ. Press. ISBN 978-0801445019.
- BirdForum Opus contributors. (2021) Australasian Bittern. In: BirdForum, the forum for wild birds and birding. Retrieved 23 January 2021 from https://www.birdforum.net/wiki/Australasian_Bittern