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Myioborus albifacies

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES PASSERIFORMES PARULIDAE

Scientific Name: Myioborus albifacies
Species Authority: Phelps & Phelps, 1946
Common Name(s):
English White-faced Redstart, White-faced Whitestart

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Ekstrom, J., Butchart, S., Harding, M., Fisher, S.
Justification:
Although this species may have a small range, it is not believed to approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Geographic Range [top]

Range Description: This species occurs on cerros Guanay, Yaví and Sipapo in south Venezuela (Ridgely and Tudor 1989, Stattersfield et al. 1998, Stotz et al. 1996).
Countries:
Native:
Venezuela, Bolivarian Republic of
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The global population size has not been quantified, but the species is described as probably fairly numerous (Hilty 2003).
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: This species occurs in montane humid forest and forest edge at elevations of 900-2,250 m (Ridgely and Tudor 1989). Little is known of its ecology.
Systems: Terrestrial

Threats [top]

Major Threat(s): Owing to the largely inaccessible nature of the isolated tepuis region, its habitat remains relatively undisturbed (Huber and Alarcón 1988). However, many of the endemic plants of the tepuis harbour flammable secondary compounds which help to spread fire and, given its relatively small range, this could affect available habitat. Any such habitat loss would be absolute as montane forests on the tepuis tend not to regrow but be replaced by bracken Pteridium (Stattersfield et al. 1998).

Citation: BirdLife International 2012. Myioborus albifacies. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 21 October 2014.
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