Ivory-billed aracari

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Ivory-billed aracari
Ivory-billed Aracari RWD4.jpg
At San Diego Zoo
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Piciformes
Family: Ramphastidae
Genus: Pteroglossus
Species:
P. azara
Binomial name
Pteroglossus azara
(Vieillot, 1819)
Subspecies

See text

Pteroglossus azara map.svg
Range of ivory-billed and brown-mandibled aracaris (see Taxonomy section)
Synonyms
  • Ramphastos azara

The ivory-billed aracari or ivory-billed araçari (Pteroglossus azara) is a near-passerine bird in the toucan family Ramphastidae. [2] It is found in Brazil, Colombia, Ecuador, Peru, and Venezuela. [3]

Contents

Taxonomy and systematics

The ivory-billed aracari was originally classified in genus Ramphastos . The International Ornithological Committee (IOC) recognizes two subspecies: P. a. flavirostris (Fraser, 1841) and the nominate P. a. azara (Vieillot, 1819). [2] The South American Classification Committee of the American Ornithological Society, the Clements taxonomy, and BirdLife International's Handbook of the Birds of the World include a third, P. a. mariae (Gould, 1854), which the IOC treats as a separate species, the brown-mandibled aracari. [4] [3] [5] [2] The two subspecies recognized by the IOC have also at times been treated as species, but all three taxa interbreed where their ranges overlap. [6]

The ivory-billed aracari's specific epithet commemorates the naturalist Félix de Azara.[ citation needed ]

This article follows the IOC two-subspecies model.

At the San Diego Zoo Ivory-billed Aracari RWD2.jpg
At the San Diego Zoo

Description

The ivory-billed aracari is 36 to 45 cm (14 to 18 in) long and weighs 120 to 160 g (4.2 to 5.6 oz). The two subspecies (and the brown-mandibled species) do not differ appreciably in length, weight, or plumage but only in bill color. Adult males have a black cap above a chestnut head and throat, maroon-red nape and upper back, green lower back, and red rump. They have a narrow black band under the throat, a wide red band on the upper breast, a wide black band on the lower breast, a yellow belly, and green thighs. Adult females have a dark brown cap and a narrower black band below the throat than males. [6]

The nominate subspecies' bill is mostly yellow, with a deep red to brown line on the maxilla that is broad at the base and tapers to a black tip. It has red, black, and ivory markings along its edge that resemble teeth. P. a. flavirostris' bill has a yellow to ivory maxilla with an orange spot under the nostril, black and white "teeth", and a yellow to ivory mandible with a narrow orange-brown line down its middle. [6]

Distribution and habitat

The nominate subspecies of ivory-billed aracari is found in the Brazilian state of Amazonas between the left bank of the Rio Solimões (upper Amazon) and the right bank of the Rio Negro. P. a. flavirostris is found in southeastern Colombia, southern Venezuela, eastern Ecuador, northeastern Peru, and northwestern Brazil with some overlap with the nominate. The species inhabits a variety of forest landscapes including varzea , gallery forest, and secondary forest, and to a lesser extent terra firme , bamboo, cloudforest, and plantations. It is more common in early- to mid-successional forest than mature. In elevation it is mostly found below 600 m (2,000 ft) but is regularly found to 900 m (3,000 ft) and locally to 600 m (2,000 ft) in the Ecuador-Bolivia border area. [6]

Behavior

Movement

The ivory-billed aracari is believed to be a year-round resident throughout its range. [6]

Feeding

The ivory-billed aracari forages in the forest's upper level and the canopy, typically in pairs or in a small group. There are few details known of its diet but it appears to be mostly fruit with some arthropods. [6]

Breeding

The ivory-billed aracari's breeding season spans from December to May in most of its range but is from February to August in the western and southwestern parts of it. It is assumed to nest in tree cavities like other toucans. Its clutch size is two to four eggs. Nothing else is known about its breeding biology. [6]

Vocalization

What is thought to be the ivory-billed aracari's song is "a series of 2–6 wailing 'twaaa-a-a' or 'tweee-ee' or 'traaa-at' notes". Other vocalizations include "rattles, grunt-like contact notes, nasal 'nyek', purr-like notes, 'kyeek' alarm, [and] pure rattles 'bddddt'". [6]

Status

The IUCN follows HBW taxonomy and so does not separately assess the ivory-billed and brown-mandibled aracaris. Taken as a whole it has a very large range, and though its population size is not known it is believed to be stable. No immeditate threats have been identified. [1] The "[v]aried habitats utilized and changing nature of its successional habitats suggest that [the] species is not likely to become threatened in near future. [6]

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References

  1. 1 2 BirdLife International (2016). "Ivory-billed Araçari Pteroglossus azara". IUCN Red List of Threatened Species . 2016: e.T22735207A95105953. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22735207A95105953.en . Retrieved 21 December 2022.
  2. 1 2 3 Gill, F.; Donsker, D.; Rasmussen, P., eds. (August 2022). "Jacamars, puffbirds, barbets, toucans, honeyguides". IOC World Bird List. v 12.2. Retrieved December 15, 2022.
  3. 1 2 Clements, J. F., T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2022. The eBird/Clements checklist of birds of the world: v2022. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/ retrieved November 10, 2022
  4. ↑ Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 24 July 2022. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved July 24, 2022
  5. ↑ HBW and BirdLife International (2022) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 7. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v7_Dec22.zip retrieved December 13, 2022
  6. 1 2 3 4 5 6 7 8 9 Short, L.L. (2020). Ivory-billed Aracari (Pteroglossus azara), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.ivbara1.01 retrieved December 21, 2022
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