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Pseudibis gigantea

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Classis: Aves
Subclassis: Carinatae
Infraclassis: Neornithes
Parvclassis: Neognathae
Ordo: Ciconiiformes
Familia: Threskiornithidae
Subfamilia: Threskiornithinae
Genus: Pseudibis
Species: Pseudibis gigantea


Pseudibis gigantea (Oustalet, 1877)


* Bulletin de Sciences de Société de Philomatique, Paris (7) 1 p.25

Vernacular names
Česky: Ibis obrovský
English: Giant Ibis
日本語: オニトキ
‪中文(繁體)‬: 大䴉
‪中文(简体)‬: 大鹮

The Giant Ibis, Thaumatibis gigantea, the only species in the monotypic genus Thaumatibis, is a wading bird of the ibis family, Threskiornithidae. It is confined to northern Cambodia, with a few birds surviving in extreme southern Laos and a recent record from Yok Don National Park, Vietnam.


It occurs in marshes, pools, wide rivers and seasonal water-meadows in deciduous, lowland forest. It eats invertebrates, crustaceans, small amphibians and reptiles. Nothing is known of its breeding behaviour, but it probably nests in trees.


This is, by far, the largest of the world's ibises. Adults are reportedly 102–106 cm (40–42 in) long and are estimated to weigh about 4.2 kg (9.3 lbs). The adults have dark plumage with a naked, greyish head and upper neck.

This bird is considered to be critically endangered due to hunting, disturbance and lowland deforestation. The current population is estimated at 100 pairs.


* BirdLife International (2004). Thaumatibis gigantea. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 11 May 2006. Database entry includes a brief justification of why this species is critically endangered and the criteria used

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