Batis erlangeri


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Batis erlangeri
Species Authority: Neumann, 1907
Common Name(s):
English Western Black-headed Batis
Taxonomic Notes: Batis minor (Sibley and Monroe 1990, 1993) was split into B. minor and B. erlangeri by Louette (2005) but this treatment was not followed by the BirdLife Taxonomic Working Group because cited morphological and vocal differences were thought to be slight or undetectable. Subsequently F. Dowsett-Lemaire reported that erlangeri has a ‘very different voice’ from coastal minor. Assuming this vocal difference to be major, and referring to our previous notes, erlangeri can be accepted as specifically distinct from minor on the basis of: very different voice’ (3);  larger size (2, based on measurements [no SDs however] in Lawson 1987); darker mantle in male (1); more olive wash in female (1).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2013
Date Assessed: 2013-11-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S.
Facilitator/Compiler(s): Symes, A.
This species has an extremely large range, and hence does not 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.
2012 Least Concern

Geographic Range [top]

Angola (Angola); Burundi; Cameroon; Central African Republic; Chad; Congo; Congo, The Democratic Republic of the; Eritrea; Ethiopia; Gabon; Kenya; Rwanda; Somalia; South Sudan; Sudan; Tanzania, United Republic of; Uganda
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 reported to be frequent to common (Urban et al. 1997).
Population Trend: Decreasing

Habitat and Ecology [top]

Systems: Terrestrial

Citation: BirdLife International 2013. Batis erlangeri. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 05 September 2015.
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