Tepui Whitestart
The Tepuiwaldsänger ( Myioborus castaneocapillus, Syn: Myioborus castaneocapilla ) is a small passerine bird in the genus Myioborus in the family of warblers ( Parulidae ). The distribution area is located in Brazil, Guyana and Venezuela. From the IUCN are classified as " not at risk " ( least concern ) out.
Features
Tepuiwaldsänger reach a body length of 13 centimeters. The wing length in males from 6.2 to 7 inches; in females from 5.9 to 6.5 centimeters. The head feathers of adults and one-year young birds of the nominate is tinted gray and olive weak and shows a prominent reddish- brown crown patch that does not pull up to the forehead. The narrow dashed circles and the indistinct line over the reins is whitish. The top plumage is tinted gray and olive. The wings are blackish with narrow gray feather edges. The underside plumage is lemon yellow and yellowish. The tail with white outer feathers and the beak and legs are blackish; the under tail-coverts white.
Resources, nutrition and reproduction
Tepuiwaldsänger are resident birds that change is limited within the altitudes. The animals inhabit mountain forests, forest edges and clearings at elevations from 1200 to 2200 meters. Unlike the related warbler species on the tepuis in Venezuela they are more scattered. Your consisting of insect food they are looking into the central regions of the vegetation. In their wanderings they are often seen in pairs or in small groups with other species of birds. For nesting and brood and nestling periods, there are no studies.
Systematics and distribution
The Tepuiwaldsänger was summarized earlier with the Brown Cap Warbler ( Myioborus brunniceps ) to one species. By disjunct distribution and because of the different vocal sounds of Tepuiwaldsänger was recognized as a distinct species, although both species are related undoubtedly close and might be sister species.
The species forms with the gold eyes Warbler ( Myioborus pariae ), the White-cheeked Warbler ( Myioborus albifacies ) and the Cardona Warbler ( Myioborus cardonai ) is a super species to which some authors also Brown Cap Warbler count.
There are three recognized subspecies:
- Myioborus c. castaneocapillus ( Cabanis, 1849) - Come to the Tepui in Gran Sabana region in Bolivar State in Venezuela before and neighboring Guyana and northern Brazil.
- Myioborus c. duidae Chapman, 1929 - Widespread on the Cerro Duida, Cerro Huachamacari and Cerro Paru in the central Amazon Basin in Venezuela and on the Cerro Jauá in the southwest of Bolivar. Differs from the nominate form by the dark orange-yellow underside plumage and the purer gray top plumage. The broken eye rings are white.
- Myioborus c. maguirei Phelps & Phelps Jr, 1961 - deposits are found only on the Cerro la Neblina in southern Amazon region in Venezuela. The subspecies is similar to the nominate form. The underside plumage is pale yellow, the interrupted whitish eye circles appear before apparent and the forehead region is less gray.