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July 30, 2026Short & citedBlog
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Field Notes • Bird

Cassowary

Cassowaries are large, flightless birds in the genus Casuarius, native to tropical forests of New Guinea and northern Australia.

Updated July 30, 20261 min readCited sources

Cassowaries are large, flightless birds native to the tropical forests of New Guinea and northern Australia. They are known for their powerful legs, distinctive casque, and a mainly fruit-based diet.

What it is

Cassowaries belong to the genus Casuarius and the family Casuariidae. Three living species are recognised: the southern cassowary, the northern cassowary, and the dwarf cassowary. They are among the tallest birds in the world, with the southern cassowary reaching up to 2 metres in height.

Key details

Cassowaries are flightless and have small wings. They live in tropical rainforests and wetlands of New Guinea, northern Queensland, and nearby islands. Their diet consists mostly of fruit, especially fallen fruit, but they also eat fungi, insects, and small animals. They are generally shy but can become aggressive when threatened, using their strong legs and claws to defend themselves.

Why it matters

Cassowaries play an important ecological role as seed dispersers in their rainforest habitats. While not native to Canada, they are of interest through zoo exhibits and wildlife education. Conservation efforts focus on protecting their shrinking habitats in Australia and New Guinea.

In short

  • Cassowaries are large, flightless birds from New Guinea and northern Australia.
  • They eat mostly fruit and are important seed dispersers.
  • They can be dangerous when threatened, especially defending nests or chicks.
  • There are three living species: southern, northern, and dwarf cassowary.
Canadian angle

Cassowaries are of interest to Canadian readers mainly through zoology, wildlife education, and conservation coverage in zoos and science media; they are not native to Canada.

Quick questions

What is a cassowary?
A cassowary is a large, flightless bird in the genus Casuarius, native to tropical parts of New Guinea and northern Australia.
Are cassowaries dangerous?
They can be dangerous if threatened or cornered, especially when defending nests or chicks. Their strong legs and claws can cause serious injuries.
Can cassowaries fly?
No. Cassowaries are flightless birds and cannot fly.

Sources

  1. Britannicahttps://www.britannica.com/animal/cassowary
    Supports: Cassowary taxonomy, description, and classification as large flightless birds of the Australo-Papuan region.
  2. San Diego Zoohttps://www.san dieg?
    Supports: Range, habitat, size, and diet of cassowaries.
  3. Smithsonian National Zoohttps://www.nationalzoo.si.edu/animals/southern-cassowary
    Supports: Southern cassowary size, native range, and defensive behaviour.
  4. Rainforest Rescuehttps://www.rainforestrescue.org.au/explore-the-rainforest/save-the-cassowary/cassowary-fast-facts/
    Supports: Habitat, Queensland range, diet, and behaviour of southern cassowaries.
  5. Rainforest Trusthttps://www.rainforesttrust.org/our-impact/rainforest-news/ten-cassowary-truths/
    Supports: Flightlessness and number of living species.
  6. Library of Congresshttps://www.loc.gov/everyday-mysteries/zoology/item/worlds-most-dangerous-bird/
    Supports: Native range, size, inability to fly, and general danger to humans.