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  3. Great Argus

Birds · Galliformes · Phasianidae

Great Argus

Argusianus argus

Vulnerable

At high risk of extinction in the wild over the medium term.

Spotted something wrong?

The great argus is a pheasant of South-East Asia whose male has the longest secondary wing feathers of any bird, covered in a series of ocelli that produce a three-dimensional optical illusion. To display, it clears a patch on the forest floor, keeps it clear for years and calls females with an extremely powerful cry. When one comes, it spreads its wings into an enormous fan facing her.

Weight

1.6 kg – 2.7 kg

Size

75 cm – 2 m

Life expectancy

15 years

Diet

Omnivore

Combines animal and plant food depending on availability.

Activity

Diurnal

Active mainly during the day.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Rainforest
13countries18parks21same family

Fun facts

  • The ocelli on its wings produce an illusion of three-dimensional spheres thanks to the shading of the pattern, a detail that fascinated Darwin and that he used as an argument about the power of sexual selection in The Descent of Man.
  • The male keeps a patch of forest floor clear for years, removing every leaf and every twig, and from there he calls with a cry that carries more than a kilometre through the vegetation.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (bird)
Habitat and environment
Primary lowland rainforest and hill forest of the Malay Peninsula, Sumatra and Borneo
Sexual maturity
3 years
Gestation / incubation
25 days of incubation
Litter / clutch size
2 eggs

Sources consulted: Wikipedia (es): Argusianus argus

Where to find it

Loading map…

The pins mark the parks where its presence is documented.

Where to see it

Parks and dive sites where this species has been documented — showing 10 of 18.

Related species

Other species in the catalogue with the most in common with Great Argus — same habitat, park, country, tags or family.

Same taxonomic family
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How to help

The great argus is classified as vulnerable. Organisations such as the IUCN, WWF and the Wildlife Conservation Society work specifically on its conservation and that of its habitat; looking into their programmes is a good starting point if you want to get involved.

It's documented in 9 protected areas — one reason why protecting these places matters for its conservation.

Keep exploring

Based on what we already know about great argus.

Share an experience, a fun fact or a tip for seeing the great argus.
See full glossary
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See its range on the interactive map→
Gunung LeuserIndonesia
Way KambasIndonesia
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Bukit Timah Nature ReserveSingapore
Khao Sok National ParkThailand
BakoMalaysia
Taman NegaraMalaysia
Kerinci SeblatIndonesia
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CountriesMalaysia
ParksGunung LeuserIndonesia
TagsOmnivore
Omnivore
Diurnal
Solitary
Vulnerable
Bird
Rainforest
Malaysia
Indonesia
Thailand
Brunei
Singapore
Cambodia
Brunei
Cambodia
China
Indonesia
Laos
Malaysia
Myanmar
Philippines
Singapore
Taiwan
Thailand
Timor-Leste
Vietnam