Justification of Red List Category
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). The population size may be small, 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). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). For these reasons the species is evaluated as Least Concern.
Found in c45% of the area of Socotra, with night surveys suggesting a density of up to three birds singing/km2 where most numerous. If each recording square where birds were present held over 50 pairs, the total Socotra and global population may be in the region of c1,000 pairs (Porter and Suleiman 2013), or 2,000 mature individuals, roughly equating to 3,000 individuals. Prior to these surveys, various surveys carried out between 1999 and 2007 indicated a population of c.300 pairs (Jennings 2010).
The population is suspected to be stable in the absence of evidence for any declines or substantial threats.
Text account compilers
Taylor, J. & Symes, A.
BirdLife International (2020) Species factsheet: Otus socotranus. Downloaded from http://www.birdlife.org on 06/04/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 06/04/2020.