Botaurus poiciloptilus
Silhouette: Sheatherius · PhyloPic
In 3 days <5% in a week ~10%
The Australasian bittern (Botaurus poiciloptilus), or Matuku-hūrepo in Māori, is a stocky, sizeable and elusive heron-like bird native to the wetlands of Australia, New Zealand, and New Caledonia. It belongs to the bittern subfamily of the heron family Ardeidae. The Australasian bittern is best known for its cryptic plumage and behaviours, which allows it to blend into the rushes and reeds of its wetland habitats, making it particularly difficult to spot. Despite being rarely seen, Australasian bittern males have a distinct "booming" call that can carry long distances. This call is said to resemble that of a Bunyip, which is why the Australasian bittern is often known as "the Bunyip Bird" in parts of Australia.
Physically, the Australasian bittern stands around 66-76 cm tall with a wingspan of around a metre long. Its streaky, beige, mottled plumage allows it to camouflage itself among the reeds and rushes of its habitat to avoid predators and hunt for prey, undetected. The species primarily feeds on fish, amphibians, and invertebrates, which it hunts by quietly stalking through shallow waters or remaining "frozen" before ambushing its prey.
Historically, the Australasian bittern was described in the early 19th century and has since been of significant interest due to its cryptic nature. The species is classified as Vulnerable on the IUCN Red List, and continues to experience population declines resulting from habitat reduction and disturbance from wetland drainage, climate change and agricultural expansion. Conservation efforts are therefore becoming increasingly necessary for its survival.
Researchers continue to attempt to understand this birds' daily patterns, ecology, and breeding behaviour to improve current conservation strategies, although their cryptic nature makes this particularly difficult. Wikipedia →
Recording1:00
Australia · 2025
© bkcw8 · iNaturalist · CC BY-NC 4.0
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New Zealand · 2022
© greghadley1 · iNaturalist · CC BY-NC 4.0
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New Zealand · 2025
© Ben Ackerley · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Hamilton Zoo | 🇳🇿 New Zealand |
Rare
Under 5% of wildlife watchers report an Australasian Bittern sighting in Brisbane on a given day, based on 135 verified sightings from GBIF citizen-science data. It is the 173rd most-seen of the 237 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
June
In that month about 10% of wildlife watchers report an Australasian Bittern in Brisbane on a given day, against under 5% in July to May, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Australasian Bittern sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 cities where we can rate Australasian Bittern sightings, Brisbane has the highest daily chance: under 5%. Next come Melbourne (Australia, under 5%).
Same family: Ardeidae
The closest relatives of the Australasian Bittern that you can see in Brisbane (family Ardeidae, Herons, Egrets, and Bitterns) are intermediate egret (about 30%), Great Egret (about 30%) and Little Egret (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Australasian Bittern is recorded against all the birds logged in Brisbane (135 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
