Rufous-tailed foliage-gleaner

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Rufous-tailed foliage-gleaner
Anabacerthia ruficaudata - Rufous-tailed Foliage-gleaner.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Furnariidae
Genus: Anabacerthia
Species:
A. ruficaudata
Binomial name
Anabacerthia ruficaudata
Anabacerthia ruficaudata map.svg
Synonyms

Philydor ruficaudatus
Philydor ruficaudatum

The rufous-tailed foliage-gleaner (Anabacerthia ruficaudata) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. [2] It is found in Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, Venezuela, and possibly French Guiana. [3]

Contents

Taxonomy and systematics

The rufous-tailed foliage-gleaner's taxonomy is unsettled. The International Ornithological Committee and BirdLife International's Handbook of the Birds of the World recognize three subspecies, the nominate A. r. ruficaudata (d'Orbigny & Lafresnaye, 1838), A. r. subflavescens (Cabanis, 1873), and A. r. flavipectus (Phelps, WH & Gilliard, 1941). [2] [4] The Clements taxonomy does not recognize A. r. subflavescens but includes it in the nominate. [5]

The rufous-tailed foliage-gleaner was previously included in genus Philydor but a 2011 paper made it plain that it did not belong there. [6]

This article follows the three-subspecies model.

Description

The rufous-tailed foliage-gleaner is 16 to 17 cm (6.3 to 6.7 in) long and weighs 21 to 32 g (0.74 to 1.1 oz). It is a medium-sized furnariid with a wedge-shaped bill. The sexes have the same plumage. Adults of the nominate subspecies have a wide ocraceous buff eyering, a narrow buff-yellow supercilium, a dark olive line behind the eye, olive-brownish lores and ear coverts with yellowish buff flecks and streaks, and a buff-yellow malar area. Their crown is dark olive with faint paler spots and streaks toward the rear, their back and rump are dark olive with pale streaks on the upper back, and their uppertail coverts are dark olive with rufous tips. Their tail is rufous. Their wings are mostly dark olive-brown, with darker brown primary coverts. Their throat is buff-yellow with some irregular darker inclusions, their breast dull buff yellow with indistinct olivaceous streaks, their belly dull buff yellow with very faint streaks, and their flanks and undertail coverts slightly darker and more olivaceous. Their iris is brown, their maxilla blackish to grayish horn, their mandible paler greenish gray to olive-green, and their legs and feet yellowish brown to olive-green. Juveniles have a more apparent and ochraceous supercilium, browner (less olive) upperparts, and darker less yellowish underparts than adults. Subspecies A. r. subflavescens is very similar to the nominate but with a clearer yellow throat and less noticeable streaks on its underparts. Subspecies A. r. flavipectus has a more ochraceous supercilum and ear coverts, a darker yellowish throat, and more yellowish underparts than the nominate. There is much intergrading between the subspecies. [7] [8] [9] [10]

Distribution and habitat

The nominate subspecies of the rufous-tailed foliage-gleaner is found in southeastern Amazonian Brazil, southeastern Peru, and northern Bolivia. A. r. subflavescens is found in northeastern Ecuador and eastern Peru. A. r. flavipectus is found in southeastern Colombia, southern Venezuela, Guyana, Suriname, and northeastern Brazil. [2] A. r. flavipectus might also occur in French Guiana, but the South American Classification Committee of the American Ornithological Society terms it hypothetical there because the records are not documented. [3]

The rufous-tailed foliage-gleaner inhabits tropical lowland evergreen and seasonally flooded forest. It primarily occurs in terra firme forest but also locally in tall várzea forest. In elevation it mostly occurs below 850 m (2,800 ft) but reaches 900 m (3,000 ft) in Brazil and 1,300 m (4,300 ft) in Venezuela. [7] [8] [9] [10]

Behavior

Movement

The rufous-tailed foliage-gleaner is a year-round resident throughout its range. [7]

Feeding

The rufous-tailed foliage-gleaner feeds on a variety of arthropods including Orthoptera, Coleoptera, Heteroptera and spiders. It forages singly and in pairs, almost always as part of mixed-species feeding flocks. It forages from the forest's mid-storey to its canopy. It gleans its prey, especially from dead leaves but also from live foliage, epiphytes, vines, and moss. [7] [8] [9] [10]

Breeding

Nothing is known about the rufous-tailed foliage-gleaner's breeding biology. [7]

Vocalization

One description of the rufous-tailed foliage-gleaner's song is "a loud, staccato series of up to 25 'te' or 'ke' notes, descends and accelerates at end, or on same pitch, accelerating, then decelerating slightly at end". It also sings a "more variable 'wt-pt-pt, wit-wit-wit, d-d-d-d-d-d-d-d-d' ". [7] Its call, at least in Brazil, is a "dry very short rattle, like 'krrreh' " [10] ; it has apparently not been described elsewhere [7] .

Status

The IUCN has assessed the rufous-tailed foliage-gleaner as being of Least Concern. It has a very large range, but its population size is not known and is believed to be decreasing. No immediate threats have been identified. [1] It is considered rare to locally common and occurs in several protected areas. [7]

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References

  1. 1 2 BirdLife International (2018). "Rufous-tailed Foliage-gleaner Anabacerthia ruficaudata". IUCN Red List of Threatened Species . 2018: e.T22702792A130276905. doi: 10.2305/IUCN.UK.2018-2.RLTS.T22702792A130276905.en . Retrieved 29 August 2023.
  2. 1 2 3 Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (July 2023). "Ovenbirds, woodcreepers". IOC World Bird List. v 13.2. Retrieved July 31, 2023.
  3. 1 2 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 31 May 2023. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved May 31, 2023
  4. 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: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v7_Dec22.zip retrieved December 13, 2022
  5. 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
  6. Derryberry, E. P., S. Claramunt, G. Derryberry, R. T. Chesser, J. Cracraft, A. Aleixo, J. Pérez-Emán, J. V. Remsen, Jr., and R. T. Brumfield. (2011). Lineage diversification and morphological evolution in a large-scale continental radiation: the Neotropical ovenbirds and woodcreepers (Aves: Furnariidae). Evolution 65(10):2973–2986.
  7. 1 2 3 4 5 6 7 8 Remsen, Jr., J. V. (2020). Rufous-tailed Foliage-gleaner (Anabacerthia ruficaudata), 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.rutfog1.01 retrieved August 29, 2023
  8. 1 2 3 McMullan, Miles; Donegan, Thomas M.; Quevedo, Alonso (2010). Field Guide to the Birds of Colombia. Bogotá: Fundación ProAves. p. 121. ISBN   978-0-9827615-0-2.
  9. 1 2 3 Ridgely, Robert S.; Greenfield, Paul J. (2001). The Birds of Ecuador: Field Guide. Vol. II. Ithaca: Cornell University Press. p. 368. ISBN   978-0-8014-8721-7.
  10. 1 2 3 4 van Perlo, Ber (2009). A Field Guide to the Birds of Brazil. New York: Oxford University Press. p. 224. ISBN   978-0-19-530155-7.