Physical Description

Type Information

Type for Ortalis motmot guttata
Catalog Number: USNM 41932
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Birds
Sex/Stage: unknown; Adult
Preparation: Skin: Whole
Collector(s): J. Von Tschudi
Locality: Peru, South America
  • Type: Von Tschudi. 1843. Archiv Fur Naturgeschichte. 9: 386.
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Source: National Museum of Natural History Collections

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Ecology

Habitat

Habitat and Ecology

Systems
  • Terrestrial
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Source: IUCN

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
BirdLife International

Reviewer/s
Butchart, S.

Contributor/s

Justification
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.


History
  • 2012
    Least Concern
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Source: IUCN

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Population

Population
The global population size has not been quantified, but this species is described as 'common' (Stotz et al. 1996).


Population Trend
Decreasing
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Wikipedia

Speckled Chachalaca

This article is about the bird. For the fly that was formerly known as Ortalis guttata, see Otites guttatus.

The speckled chachalaca (Ortalis guttata) is a species of bird in the family Cracidae. It is found in forests and woodlands in the western Amazon Basin. It has distinct white scaling/spotting on the lower neck and chest, but otherwise it resembles other chachalacas, it being vaguely pleasant (though far more arboreal and social), and with an overall brown plumage.

Taxonomy[edit]

Several taxa formerly included as subspecies of the speckled chachalaca have been considered valid species: the scaled chachalaca (O. squamata Lesson, 1829) in south-eastern Brazil, and the East Brazilian chachalaca (O. araucuan Spix, 1825) in eastern Brazil. The last of these has also been referred to as the Brazilian chachalaca or the white-bellied chachalaca, although the former arguably is problematic as numerous other chachalacas are found in Brazil, while the latter leads to easy confusion with the Central American Ortalis leucogastra. Alternatively, "araucuan" and "squamata" have been included as subspecies of the little chachalaca[2] (the connection between the Guiana Shield and Atlantic forest is known from several other birds, e.g. the buff-throated woodcreeper and the yellow-green grosbeak). Both O. araucuan and O. squamata were originally described as valid species, but – without reason – changed to subspecies of O. guttata. Nevertheless, they all have white scaling/spotting on the lower neck and chest, thus resembling the Amazonian nominate group (incl. "subaffinis"), and most recent authorities continue to treat all as subspecies of O. guttata.

The Colombian chachalaca (O. columbiana Hellmayr, 1906) was formerly considered a subspecies in this group, but is now recognized as a separate species by the South American Classification Committee of the AOU and the IOC.

Status[edit]

It is common in large parts of its Amazonian range. Nevertheless, its tolerance of disturbed habitats combined with its relatively small size makes it far less vulnerable than, for instance, the related curassows.

References[edit]

  1. ^ BirdLife International (2013). "Ortalis guttata". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013. 
  2. ^ "Resolução Nº 36 – Excluir Ortalis araucuan (Spix, 1825) da lista principal de aves brasileiras, incorporando-a a Ortalis guttata (Spix, 1825)." (in Portuguese). CBRO. Retrieved October 27, 2008. 
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