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Rheiformes
EntityQ1113470· pop 22· linked from 323 articles

Rheiformes

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Also known as Rhea

Rheiformes is an order that contains the family Rheidae (rheas). It is in the infraclass Paleognathae, which contains all ratites. Extant members are found in South America. While the IOC World Bird List and the Clements Checklist categorise Rheiformes as its own order, the BirdLife Data Zone includes rheas, along with ostriches, tinamous, cassowaries, emu, and kiwis, in the order Struthioniformes. Of the two extant species of rheas recognized by the IUCN Red List, , Rhea americana is listed as near threatened, while Rhea pennata is listed as least concern. From 2014 to 2022, the IUCN recognis

Species

ORDER

  1. KingdomAnimalia
  2. PhylumChordata
  3. ClassAves
  4. OrderRheiformes
Observations recorded68,993

美洲鸵鸟目（学名：Rheiformes）是鸟纲的一目，仅1科1属2种，即美洲鸵鸟和美洲小鸵。分布于美洲，为美洲最大的鸟类，体高约1.6米。群居。栖息于平原地带。 美洲鸵鸟目（Rheiformes） 美洲鸵鸟科（Rheidae） 美洲鸵鸟属（Rhea） 美洲鸵鸟（Rhea americana ） 美洲小鸵（Rhea pennata )

via GBIF

Research

129 papers

via PubMed

Wikidata facts

Instance of
taxon
Parent taxon
Notopalaeognathae
Image
Lesser Rhea Pterocnemia pennata.jpg
Show 6 more facts
taxon common name
Nanduer
taxon rank
order
taxon name
Rheiformes
topic's main category
Category:Rheiformes
Commons category
Rheiformes
taxon range
Brazil
Sources (1)

via Wikidata · CC0

~3 min read

Encyclopedic overview

2 sections
Contents
  • Extant species summary
  • References

Rheiformes is an order that contains the family Rheidae (rheas). It is in the infraclass Paleognathae, which contains all ratites. Extant members are found in South America. While the IOC World Bird List and the Clements Checklist categorise Rheiformes as its own order, the BirdLife Data Zone includes rheas, along with ostriches, tinamous, cassowaries, emu, and kiwis, in the order Struthioniformes. Of the two extant species of rheas recognized by the IUCN Red List, , Rhea americana is listed as near threatened, while Rhea pennata is listed as least concern. From 2014 to 2022, the IUCN recognised Rhea tarapacensis as a separate species, and listed it as near threatened in its last assessment in 2020; in 2022, it was again recognised as a subspecies of R. pennata.

Today, the order is represented by the sole living genus Rhea, though it contains 4-5 genera in total depending on the affiliation of the extinct genus Diogenornis. The taxonomy of the order is as follows:

Excerpted from Wikipedia’s “Rheiformes” article, available under the CC BY-SA 4.0 licence.

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