Robsonius rabori


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Robsonius rabori
Species Authority: (Rand, 1960)
Common Name/s:
English Rusty-faced Babbler
Taxonomic Notes: Napothera rabori (Sibley and Monroe 1990, 1993) has been moved into the new genus Robsonius and split into R. rabori and R. sorsogonensis following Collar (2006).

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(ii,iii,v) ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor/s: BirdLife International
Reviewer/s: Butchart, S. & Symes, A.
Contributor/s: Gonzalez, J., Hutchinson, R., Allen, D. & Hosner, P.
Facilitator/s: Calvert, R., Taylor, J., Allinson, T
This species is listed as Vulnerable as it has a small range, in which it is found at a limited number of locations, and its habitat is declining both in area and quality as a result of deforestation. However, recent data suggests that it may be present at more localities than previously thought.

Geographic Range [top]

Range Description: Robsonius rabori is found in northern Luzon in the Philippines. It is considered uncommon, although tape playback indicates it may be widely overlooked (del Hoyo et al. 2007) and it has been described as fairly common around Adams in northwest Luzon and at Mt. Cagua in northeast Luzon (P. Hosner in litt. 2012). The population is thought to be declining owing to habitat destruction (del Hoyo et al. 2007, R. Hutchinson in litt. 2010).

Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The global population size has not been quantified, although it has been described as uncommon. However, it may be more common than suggested by field observations owing to its secretive habits (del Hoyo et al. 2007).

Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: This species is found in lowland forest and secondary growth from sea-level to 1,300 m. It presumably feeds on invertebrates, and has been observed walking across the forest floor searching for prey in the leaf litter, sometimes in pairs (del Hoyo et al. 2007, J. C. Gonzalez in litt. 2010). It is often encountered in the vicinity of small streams (D. Allen in litt. 2012). Very little is known about its breeding habitats. Its nest is a large dome made of dry sticks, branches and leaves (Sánchez-González et al. 2010).

Systems: Terrestrial

Threats [top]

Major Threat(s): Logging within its elevational range has been described as extensive (del Hoyo et al. 2007).

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
It is present in the Northern Sierra Madre Natural Park (del Hoyo et al. 2007).

Conservation Actions Proposed
Assess the population size and establish a monitoring programme to establish trends. Establish its ability to persist in degraded habitats. Identify and assess threats. Ensure that the Northern Sierra Madre Natural Park is effectively protected

Citation: BirdLife International 2012. Robsonius rabori. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <>. Downloaded on 24 April 2014.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided