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Theristicus
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Theristicus
Black-faced ibis.
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Pelecaniformes
Family: Threskiornithidae
Subfamily: Threskiornithinae
Genus: Theristicus
Wagler, 1832
Type species
Tantalus melanopis
Gmelin, 1789

Theristicus is a genus of birds in the family Threskiornithidae. They are found in open, grassy habitats in South America. All have a long, decurved dark bill, relatively short reddish legs that do not extend beyond the tail in flight (unlike e.g. Eudocimus and Plegadis), and at least the back is grey.

Taxonomy

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The genus Theristicus was erected by the German naturalist Johann Georg Wagler in 1832 with the black-faced ibis as the type species.[1][2] The name is from the Ancient Greek theristikos meaning "of reaping".[3] The genus contains four species.[4]

Genus Theristicus Wagler, 1832 – four species
Common name Scientific name and subspecies Range Size and ecology IUCN status and estimated population
Plumbeous ibis

Theristicus caerulescens
(Vieillot, 1817)
south-western Brazil, especially in southern Mato Grosso and Rio Grande do Sul; Paraguay, especially in the Chaco and in the Paraguayan section of the Parana Basin; Uruguay; north-eastern Argentina and northern and eastern Bolivia
Map of range
Size:

Habitat:

Diet:
 LC 


Buff-necked ibis

Theristicus caudatus
(Boddaert, 1783)

Two subspecies
  • T. c. caudatus (Boddaert, 1783)
  • T. c. hyperorius Todd, 1948
northern and central South America in Colombia, Venezuela, the Guianas and Brazil
Map of range
Size:

Habitat:

Diet:
 LC 


Black-faced ibis

Theristicus melanopis
von Berlepsch & Stolzmann, 1894
central Argentina and Chile
Map of range
Size:

Habitat:

Diet:
 LC 


Andean ibis

Theristicus branickii
(Gmelin, 1789)
western South America
Map of range
Size:

Habitat:

Diet:
 NT 



References

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Further reading

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