Tepui Warbler

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Tepui Warbler
Systematics
Order : Passerines (Passeriformes)
Subordination : Songbirds (passeri)
Superfamily : Passeroidea
Family : Wood Warbler (Parulidae)
Genre : Myioborus
Type : Tepui Warbler
Scientific name
Myioborus castaneocapillus
( Cabanis , 1849)
distribution

The Tepui wood warbler ( Myioborus castaneocapillus , syn .: Myioborus castaneocapilla ) is a small songbird from the genus Myioborus in the family of the wood warbler (Parulidae). The distribution area is in Brazil , Guyana and Venezuela . They are listed as “not at risk” (least concern) by the IUCN .

features

Tepui warblers reach a body length of 13 centimeters. The wing length is 6.2 to 7 centimeters in the males; in the females 5.9 to 6.5 centimeters. The head plumage of adults and one-year-old young birds of the nominate form is gray and pale olive tinted and shows a prominent reddish-brown crown spot that does not extend to the forehead. The narrow, interrupted dark circles and the indistinct line over the reins is whitish. The upper side plumage is tinted gray and olive. The wings are blackish with narrow gray feather edges. The underside plumage is lemon yellow-yellowish. The tail with white outer feathers and the beak and legs are blackish; the under tail-coverts white.

Occurrence, nutrition and reproduction

Tepui warbler are resident birds that change only to a limited extent within the altitude. The animals inhabit mountain forests, forest edges and clearings at altitudes of 1200 to 2200 meters. Unlike the related wood warbler species on the tepuis in Venezuela, they are more dispersed. They seek their food consisting of insects in the central regions of the vegetation. On their forays they can often be seen in pairs or in small groups with other bird species. There are no studies on nest building or the breeding and nestling times.

Systematics and distribution

The tepui wood warbler was formerly combined with the brown- cap wood warbler ( Myioborus brunniceps ) to one species. Due to the disjoint distribution and because of the different vocal sounds, the Tepui wood warbler was recorded as an independent species, although both species are undoubtedly closely related and possibly sister species .

It makes with the Golden Eyes Warbler ( Myioborus pariae ), the White-cheeked Warbler ( Myioborus albifacies ) and the Cardona Warbler ( Myioborus cardonai ) a super species to which some authors also include the Brown Cap Warbler.

There are three recognized subspecies:

  • Myioborus c. castaneocapillus ( Cabanis , 1849) - Found on the tepuis in the Gran Sabana region in the state of Bolívar in Venezuela and in bordering Guyana and in northern Brazil.
  • Myioborus c. duidae Chapman , 1929 - Distributed on Cerro Duida, Cerro Huachamacari and Cerro Parú in the central Amazon region in Venezuela and on Cerro Jáua in southwestern Bolívar. Differs from the nominate form by the dark orange-yellow lower side plumage and the purer gray upper side plumage. The interrupted dark circles are whiter.
  • Myioborus c. maguirei Phelps & Phelps Jr , 1961 - Occurrence only on Cerro la Neblina in the southern Amazon region in Venezuela. The subspecies is similar to the nominate form. The underside plumage is paler yellow, the interrupted whitish dark circles appear more clearly and the forehead region is less gray.

swell

Individual evidence

  1. ↑ Archived copy ( Memento of the original from April 12, 2011 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.museum.lsu.edu
  2. ↑ Jon Curson, David Quinn, David Beadle: New World Warblers. Helm, London 1994, ISBN 0-7136-3932-6 , pp. 196 and 197.

literature

  • Jon Curson, David Quinn, David Beadle: New World Warblers. Helm, London 1994, ISBN 0-7136-3932-6 , pp. 72 and 196.

Web links