Olive-throated parakeet

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Olive-throated parakeet
Olive-throated Parakeet.jpg
Eupsittula nana nana
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Class: Aves
Order: Psittaciformes
Family: Psittacidae
Genus: Eupsittula
Species:
E. nana
Binomial name
Eupsittula nana
(Vigors, 1830)
Eupsittula nana map.svg
Synonyms
  • Aratinga nana
  • Aratinga astec
  • Eupsittula astec
feeding on madre cacao (Gliricidia) in Belize Olive-throated parakeet (Eupsittula nana astec) feeding on madre cacao (Gliricidia) Orange Walk.jpg
feeding on madre cacao ( Gliricidia ) in Belize

The olive-throated parakeet (Eupsittula nana), also known as the olive-throated conure in aviculture, is a species of bird in subfamily Arinae of the family Psittacidae, the African and New World parrots. [3] It is found from Mexico to Costa Rica and in Jamaica; it has been introduced to the Dominican Republic on Hispaniola. [4]

Contents

Taxonomy and systematics

The olive-throated parakeet was long included in genus Aratinga but since about 2014 has been in Eupsittula. [5] [6] The American Ornithological Society, the International Ornithological Committee, and the Clements taxonomy assign these three subspecies to the olive-throated parakeet: [6] [3] [7]

BirdLife International's Handbook of the Birds of the World (HBW) treats E. n. astec as the species "Aztec parakeet" with E. n. vicinalis as a subspecies of it. It treats E. n. nana by itself as the "Jamaican parakeet". [8]

This article follows the single species, three-subspecies, model.

Description

The "Jamaican" olive-throated parakeet E. n. nana is the nominate subspecies; it is 22 to 26 cm (8.7 to 10 in) long and weighs about 72 to 85 g (2.5 to 3.0 oz). The "Aztec" olive-throated parakeet is 21.5 to 25 cm (8.5 to 9.8 in) long and weighs about 85 g (3.0 oz). The sexes are alike. Adults of the nominate subspecies have a mainly dark green head and upperparts with yellowish ear coverts and rump. Bare white skin surrounds their eye. Their throat and breast are olive-brown that becomes olive on the belly and vent. Their wings are mostly green with dull blue on the upper side of the flight feathers and gray on their underside. Their tail's upper surface is green and its underside is yellowish. Their bill is browish horn color with a paler tip, their iris yellow to orange, and their legs blackish gray. Immature birds are similar to adults. [4]

Subspecies E. n. astec ("Aztec" in part) has paler olive-brown underparts, especially on the belly and vent. Subspecies E. n. vicinalis is slightly larger than astec and is brighter green above and greener below. [4] [9] [10]

Distribution and habitat

The olive-throated parakeet has two widely disjunct populations. The nominate subspecies E. n. nana is found naturally in Jamaica and has been introduced to the Dominican Republic. [4] [11] Subspecies E. n. vicinalis is found in northeastern Mexico from Tamaulipas to northern Veracruz. E. n. astec is found on the Caribbean side from Veracruz through Guatemala, Belize, Honduras, Nicaragua, and Costa Rica into western Panama's Bocas del Toro Province. [4] [9] [10]

The olive-throated parakeet's principal habitat is deciduous woodlands. It also inhabits the interior and edges of humid forest, riparian areas, scrublands, and more open landscapes such as plantations, clearings with trees, and gardens. It occurs in pine stands throughout, a habitat which is heavily used in the Dominican Republic. In elevation it reaches 1,000 m (3,300 ft) in Mexico, 1,100 m (3,600 ft) in Honduras, 700 m (2,300 ft) in Costa Rica, and 1,500 m (4,900 ft) in Jamaica. [4] [9] [10]

Behavior

Movement

The nominate subspecies of the olive-throated parakeet makes some movements between moist and dryer habitats in response to the availability of food. The other two subspecies are generally considered to be year-round residents, but E. n. astec visits Caye Caulker off Belize in winter. [4]

Feeding

A major part of the olive-throated parakeet's diet is fig fruits ( Ficus ); other fruits, leaves, and flowers are also eaten. On Jamaica the species is typically seen in flocks of up to about 20 individuals. On that island it is a crop pest, feeding especially on maize but also on corn and cultivated fruits. On the mainland, flocks can have 50 or more members and sometimes include Finsch's parakeet (Psittacara finschi). [4]

Breeding

The nominate subspecies of the olive-throated parakeet nests between March and June in Jamaica and somewhat earlier in the Dominican Republic. It nests between January and April in Costa Rica and April and May in Belize and Guatemala. In all areas it nests in cavities in termitaria, which it usually excavates itself. It has nested in tree holes in Jamaica. The clutch size is three to five eggs. The incubation period, time to fledging, and details of parental care are not known. [4]

Vocalization

The olive-throated parakeet's vocalizations differ little among the subspecies. Their calls are "a sharp, grating “krik-krik-krik-krik” or raucous “krrieh krrie krreah”." [4]

Status

The IUCN follows HBW taxonomy and therefore has separately assessed the "Jamaican" and "Aztec" olive-throated parakeets. The Jamaican population is considered Near Threatened. It has a confined range, and its estimated population of 10,000 to 20,000 mature individuals is believed to be decreasing. "Habitat loss and fragmentation are perhaps the greatest on-going threats". Deforestation is not high but coastal development for residences, tourism, and industry is significant. Some small-scale poaching for food and the pet trade contribute to the decline. [1] It is considered common and widespread in Jamaica but is persecuted as a crop pest. The population in the Dominican Republic is apparently increasing. [4] The "Aztec" olive-throated parakeet is assessed as being of Least Concern. It has a large range but its population size is not known and is believed to be decreasing. No immediate threats have been identified. [2] It is locally common to abundant and occurs in several protected areas, though some sub-populations have declined due to habitat loss. [4] The species as a whole is listed in CITES Appendix II. [12]

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References

  1. 1 2 BirdLife International (2020). "Jamaican Parakeet Eupsittula nana". IUCN Red List of Threatened Species . 2020: e.T45418540A179402014. doi: 10.2305/IUCN.UK.2020-3.RLTS.T45418540A179402014.en . Retrieved 16 March 2023.
  2. 1 2 BirdLife International (2016). "Aztec Parakeet Eupsittula astec". IUCN Red List of Threatened Species . 2016: e.T45418555A95148063. doi: 10.2305/IUCN.UK.2016-3.RLTS.T45418555A95148063.en . Retrieved 16 March 2023.
  3. 1 2 Gill, F.; Donsker, D.; Rasmussen, P., eds. (January 2023). "Parrots, cockatoos". IOC World Bird List. v 13.1. Retrieved 18 February 2023.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 Collar, N., J. del Hoyo, P. F. D. Boesman, and G. M. Kirwan (2020). Olive-throated Parakeet (Eupsittula nana), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.oltpar1.01 retrieved March 16, 2023
  5. ↑ Check-list of North American Birds (7th ed.). Washington, D.C.: American Ornithologists' Union. 1998.
  6. 1 2 Chesser, R. T., S. M. Billerman, K. J. Burns, C. Cicero, J. L. Dunn, B. E. Hernández-Baños, R. A. Jiménez, A. W. Kratter, N. A. Mason, P. C. Rasmussen, J. V. Remsen, Jr., D. F. Stotz, and K. Winker. 2022. Check-list of North American Birds (online). American Ornithological Society. https://checklist.aou.org/taxa
  7. ↑ 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
  8. ↑ 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
  9. 1 2 3 Fagan, Jesse; Komar, Oliver (2016). Field Guide to Birds of Northern Central America. Peterson Field Guides. Boston: Houghton Mifflin Harcourt. p. 223. ISBN   978-0-544-37326-6.
  10. 1 2 3 Garrigues, Richard; Dean, Robert (2007). The Birds of Costa Rica. Ithaca: Zona Tropical/Comstock/Cornell University Press. p. 94. ISBN   978-0-8014-7373-9.
  11. ↑ Latta, Steven C.; Townsend, Andrea K. (January 2010). "The origins of the recently discovered Hispaniolan Olive-throated Parakeet: A phylogeographic perspective on a conservation conundrum". Caribbean Journal of Science. 46 (2): 143–149. doi:10.18475/cjos.v46i2.a2. S2CID   88153066 . Retrieved 9 September 2020.
  12. ↑ "Appendices | CITES". cites.org. Retrieved 4 March 2023.

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