Dinelli's doradito

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Dinelli's doradito
Pseudocolopteryx dinelliana - Dinelli's doradito.jpg
At Huanqueros, Santa Fe, Argentina.
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Tyrannidae
Genus: Pseudocolopteryx
Species:
P. dinelliana
Binomial name
Pseudocolopteryx dinelliana
Lillo, 1905
Pseudocolopteryx dinelliana map.svg

Dinelli's doradito (Pseudocolopteryx dinelliana) is a Near Threatened species of bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. [1] [2] It is found in Argentina, Bolivia, Paraguay, and possibly Brazil. [3]

Contents

Taxonomy and systematics

Dinelli's doradito is monotypic. [2]

The species' common name and specific epithet commemorate the Argentinian biologist Luis Dinelli. [4]

Description

Dinelli's doradito is about 11 cm (4.3 in) long. The sexes have essentially the same plumage though females are duller than males. Adults have a mostly yellowish olive head whose crown, lores, and cheeks have a rufescent tinge. Their upperparts are yellowish olive. Their wings are a grayer olive, with thin buff edges on the flight feathers and wing coverts; the last show as two faint wing bars. Their tail is a brower olive. Males' throat and underparts are bright yellow; females' are duller yellow. Both sexes have a dark brown iris, a slender, black, warbler-like bill, and blackish gray legs and feet. [5] [6]

Distribution and habitat

Dinelli's doradito is found from north-central Argentina's Córdoba north into western Paraguay and slightly into southern Bolivia. [5] [6] The South American Classification Committee of the American Ornithological Society has unconfirmed sight records in southern Brazil and therefore lists the species as hypothetical in that country. [3] The species inhabits beds of reeds, grassy marshes, and shrublands near water. In elevation it reaches only 500 m (1,600 ft) above sea level. [5] [6]

Behavior

Movement

Dinelli's doradito breeds in Argentina's Córdoba, Santiago del Estero, and, at least formerly, Tucumán provinces. It migrates north for the austral winter into northern Argentina, western Paraguay, southern Bolivia, and possibly southern Brazil. It might be a year-round resident in the most northerly part of its breeding range. [1] [3] [5] [6] [ excessive citations ]

Feeding

The diet of Dinelli's doradito has not been detailed but is known to include insects and spiders. It forages in dense marsh vegetation. [5]

Breeding

Dinelli's doradito breeds between September and April. Its nest is a deep cup made of plant fibers and spider egg cases attached to marsh grasses and sedges or in a fork of a shrub's branch in the marsh. The clutch is three eggs. The incubation period, time to fledging, and details of parental care are not known. [5]

Vocalization

The song of Dinelli's doradito is a "[s]oft but twangy 'redek-redek-redidek', or 'zeik-zeik' ". [5]

Status

The IUCN originally in 1994 assessed Dinelli's doradito as Vulnerable and since 2004 as Near Threatened. It is rare to locally common in its somewhat limited range and its estimated population of between 6700 and 20,000 mature individuals is believed to be decreasing. "Canalisation may affect the wetlands of Bañados del Río Dulce and Laguna de Mar Chiquita, and there are other modifications to wetlands occurring within its range. Where it inhabits drier savanna-type vegetation, it is under some pressure from agricultural conversion, particularly for cattle ranching." It does occur in a few public and privately protected areas. [5]

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References

  1. 1 2 3 BirdLife International (2021). "Dinelli's Doradito Pseudocolopteryx dinelliana". IUCN Red List of Threatened Species . 2021: e.T22699433A200209291. doi: 10.2305/IUCN.UK.2021-3.RLTS.T22699433A200209291.en . Retrieved 22 October 2024.
  2. 1 2 Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (August 2024). "Tyrant flycatchers". IOC World Bird List. v 14.2. Retrieved 19 August 2024.
  3. 1 2 3 Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, G. Del-Rio, A. Jaramillo, D. F. Lane, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 28 September 2024. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved September 29, 2024
  4. ↑ Beolens, Bo; Watkins, Michael (2003). Whose Bird? Men and Women Commemorated in the Common Names of Birds. London: Christopher Helm. p. 106.
  5. 1 2 3 4 5 6 7 8 Bostwick, K. (2020). Dinelli's Doradito (Pseudocolopteryx dinelliana), 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.dindor2.01 retrieved October 22, 2024
  6. 1 2 3 4 de la Peña, Martín R.; Rumboll, Maurice (2001). Birds of Southern South America and Antarctica. Princeton Illustrated Checklists. New Jersey: Princeton University Press. pp. Plate 72, map 72.4. ISBN   0691090351.
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